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Usually, PHA authors attempt to install their harmful apps on as many devices as possible. However, a few PHA authors spend substantial effort, time, and money to create and install their harmful app on a small number of devices to achieve a certain goal.<br /> <br /> This blog post covers Tizi, a backdoor family with some rooting capabilities that was used in a targeted attack against devices in African countries, specifically: Kenya, Nigeria, and Tanzania. We'll talk about how the Google Play Protect and Threat Analysis teams worked together to detect and investigate Tizi-infected apps and remove and block them from Android devices.<br /> <b>What is Tizi?</b><br /> <br /> Tizi is a fully featured backdoor that installs spyware to steal sensitive data from popular social media applications. The Google Play Protect security team discovered this family in September 2017 when device scans found an app with rooting capabilities that exploited old vulnerabilities. The team used this app to find more applications in the Tizi family, the oldest of which is from October 2015. The Tizi app developer also created a website and used social media to encourage more app installs from Google Play and third-party websites.<br /> <br /> Here is an example social media post promoting a Tizi-infected app:<br /> <div class="separator" style="clear: both; text-align: center;"> <a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgH92m4Au9DcIPCqBxuzfH3QIWzE3iCy8DynJgiHUahOopKHKWu5WB5RliV-nOIo0ssA8iXZfLXFn0IeFkVRlpjjNNNJZQrMVfNbrJYMLsoaDPtDXm7U4evxPhg0lIqMlkJ_lh5ea4GzkKQ/s1600/tizi1.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="688" data-original-width="1194" height="230" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgH92m4Au9DcIPCqBxuzfH3QIWzE3iCy8DynJgiHUahOopKHKWu5WB5RliV-nOIo0ssA8iXZfLXFn0IeFkVRlpjjNNNJZQrMVfNbrJYMLsoaDPtDXm7U4evxPhg0lIqMlkJ_lh5ea4GzkKQ/s400/tizi1.png" width="400" /></a></div> <div class="separator" style="clear: both; text-align: left;"> <br /></div> <div style="text-align: left;"> <b>What is the scope of Tizi?</b></div> <div style="text-align: left;"> <br /></div> <div class="separator" style="clear: both; text-align: center;"> <a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg11pn1olboggLIVE39J02soyAaJlYUXyxzurLsGg66CHX-8-jx7gFEQLPYelHJAGoL9Uv7cd4CYR6l7PcUE-ey4p2QJ0U_L2RH4VJoUdL8a-HipkvQlotFeaGd2mfEleSFHONIYGfSCAak/s1600/Tizi2.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="405" data-original-width="850" height="304" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg11pn1olboggLIVE39J02soyAaJlYUXyxzurLsGg66CHX-8-jx7gFEQLPYelHJAGoL9Uv7cd4CYR6l7PcUE-ey4p2QJ0U_L2RH4VJoUdL8a-HipkvQlotFeaGd2mfEleSFHONIYGfSCAak/s640/Tizi2.png" width="640" /></a></div> <div class="separator" style="clear: both; text-align: center;"> <br /></div> <div style="text-align: left;"> <b>What are we doing?</b></div> <div style="text-align: left;"> <br /></div> <div style="text-align: left;"> To protect Android devices and users, we used Google Play Protect to disable Tizi-infected apps on affected devices and have notified users of all known affected devices. The developers' accounts have been suspended from Play.</div> <div style="text-align: left;"> <br /></div> <div style="text-align: left;"> The Google Play Protect team also used information and signals from the Tizi apps to update Google's <a href="https://source.android.com/security/reports/Google_Android_Security_2016_Report_Final.pdf">on-device security services</a> and the systems that search for PHAs. These enhancements have been enabled for all users of our security services and increases coverage for Google Play users and the rest of the Android ecosystem.</div> <div style="text-align: left;"> <br /></div> <div style="text-align: left;"> Additionally, there is more technical information below to help the security industry in our collective work against PHAs.</div> <div style="text-align: left;"> <b><br /></b></div> <div style="text-align: left;"> <b><br /></b></div> <div style="text-align: left;"> <b>What do I need to do?</b></div> <div style="text-align: left;"> <br /></div> <div style="text-align: left;"> Through our investigation, we identified around 1,300 devices affected by Tizi. To reduce the chance of your device being affected by PHAs and other threats, we recommend these 5 basic steps:</div> <div style="text-align: left;"> </div> <ul> <li><b>Check permissions:</b> Be cautious with apps that request unreasonable permissions. For example, a flashlight app shouldn't need access to send SMS messages.</li> <li><b><a href="https://support.google.com/nexus/answer/2819522">Enable a secure lock screen</a></b>: Pick a PIN, pattern, or password that is easy for you to remember and hard for others to guess.</li> <li><b><a href="https://support.google.com/nexus/answer/4457705">Update your device</a></b>: Keep your device up-to-date with the latest security patches. Tizi exploited older and publicly known security vulnerabilities, so devices that have up-to-date security patches are less exposed to this kind of attack.</li> <li><b><a href="https://support.google.com/accounts/answer/2812853">Google Play Protect</a></b>: Ensure Google Play Protect is enabled.</li> <li><b><a href="https://www.google.com/android/devicemanager">Locate your device</a></b>: Practice finding your device, because you are far more likely to lose your device than install a PHA.</li> </ul> <div> <b><br /></b></div> <div> <b>How does Tizi work?</b></div> <div> <b><br /></b></div> <div> The Google Play Protect team had previously classified some samples as spyware or backdoor PHAs without connecting them as a family. The early Tizi variants didn't have rooting capabilities or obfuscation, but later variants did.</div> <div> <br /></div> <div> After gaining root, Tizi steals sensitive data from popular social media apps like Facebook, Twitter, WhatsApp, Viber, Skype, LinkedIn, and Telegram. It usually first contacts its command-and-control servers by sending an SMS with the device's GPS coordinates to a specific number. Subsequent command-and-control communications are normally performed over regular HTTPS, though in some specific versions, Tizi uses the <a href="https://en.wikipedia.org/wiki/MQTT">MQTT</a> messaging protocol with a custom server. The backdoor contains various capabilities common to commercial spyware, such as recording calls from WhatsApp, Viber, and Skype; sending and receiving SMS messages; and accessing calendar events, call log, contacts, photos, Wi-Fi encryption keys, and a list of all installed apps. Tizi apps can also record ambient audio and take pictures without displaying the image on the device's screen.</div> <div> <br /></div> <div> Tizi can root the device by exploiting one of the following local vulnerabilities:</div> <div> <ul> <li>CVE-2012-4220</li> <li>CVE-2013-2596</li> <li>CVE-2013-2597</li> <li>CVE-2013-2595</li> <li>CVE-2013-2094</li> <li>CVE-2013-6282</li> <li>CVE-2014-3153</li> <li>CVE-2015-3636</li> <li>CVE-2015-1805</li> </ul> <div> Most of these vulnerabilities target older chipsets, devices, and Android versions. All of the listed vulnerabilities are fixed on devices with a security patch level of April 2016 or later, and most of them were patched considerably prior to this date. Devices with this patch level or later are far less exposed to Tizi's capabilities. If a Tizi app is unable to take control of a device because the vulnerabilities it tries to use are are all patched, it will still attempt to perform some actions through the high level of permissions it asks the user to grant to it, mainly around reading and sending SMS messages and monitoring, redirecting, and preventing outgoing phone calls.</div> </div> <div> <br /></div> <div> <b><br /></b></div> <div> <b>Samples uploaded to VirusTotal</b></div> <div> <b><br /></b></div> <div> To encourage further research in the security community, here are some sample applications embedding Tizi that were already on VirusTotal.</div> <div> <br /></div> <div> <div dir="ltr" style="background-color: white; color: #222222; font-family: arial, sans-serif; font-size: 12.8px; margin-left: 0pt;"> <table style="border-collapse: collapse; border: none;"><colgroup><col width="203"></col><col width="219"></col><col width="202"></col></colgroup><tbody> <tr style="height: 22pt;"><td style="background-color: #efefef; border-color: rgb(102, 102, 102); border-style: solid; border-width: 0.99609pt; margin: 0px; padding: 5pt; vertical-align: top;"><div dir="ltr" style="line-height: 1.44; margin-bottom: 10pt; margin-top: 10pt;"> <span style="background-color: transparent; font-family: "roboto"; font-size: 11pt; font-weight: 700; vertical-align: baseline; white-space: pre-wrap;">Package name</span></div> </td><td style="background-color: #efefef; border-color: rgb(102, 102, 102); border-style: solid; border-width: 0.99609pt; margin: 0px; padding: 5pt; vertical-align: top;"><div dir="ltr" style="line-height: 1.44; margin-bottom: 10pt; margin-top: 10pt;"> <span style="background-color: transparent; font-family: "roboto"; font-size: 11pt; font-weight: 700; vertical-align: baseline; white-space: pre-wrap;">SHA256 digest</span></div> </td><td style="background-color: #efefef; border-color: rgb(102, 102, 102); border-style: solid; border-width: 0.99609pt; margin: 0px; padding: 5pt; vertical-align: top;"><div dir="ltr" style="line-height: 1.44; margin-bottom: 10pt; margin-top: 10pt;"> <span style="background-color: transparent; font-family: "roboto"; font-size: 11pt; font-weight: 700; vertical-align: baseline; white-space: pre-wrap;">SHA1 certificate</span></div> </td></tr> <tr style="height: 21pt;"><td style="border-color: rgb(102, 102, 102); border-style: solid; border-width: 0.99609pt; margin: 0px; padding: 5pt; vertical-align: top;"><div dir="ltr" style="line-height: 1.656; margin-bottom: 10pt; margin-top: 10pt;"> <span style="background-color: transparent; font-family: "roboto"; font-size: 9pt; vertical-align: baseline; white-space: pre-wrap;">com.press.nasa.com.tanofresh</span></div> </td><td style="border-color: rgb(102, 102, 102); border-style: solid; border-width: 0.99609pt; margin: 0px; padding: 5pt; vertical-align: top;"><div dir="ltr" style="line-height: 1.656; margin-bottom: 10pt; margin-top: 10pt;"> <span style="background-color: transparent; font-family: "roboto"; font-size: 9pt; vertical-align: baseline; white-space: pre-wrap;">4d780a6fc18458311250d4d1edc750<wbr></wbr>468fdb9b3e4c950dce5b35d4567b47<wbr></wbr>d4a7</span></div> </td><td style="border-color: rgb(102, 102, 102); border-style: solid; border-width: 0.99609pt; margin: 0px; padding: 5pt; vertical-align: top;"><div dir="ltr" style="line-height: 1.656; margin-bottom: 10pt; margin-top: 10pt;"> <span style="background-color: transparent; font-family: "roboto"; font-size: 9pt; vertical-align: baseline; white-space: pre-wrap;">816bbee3cab5eed00b8bd16df56032<wbr></wbr>a96e243201</span></div> </td></tr> <tr style="height: 21pt;"><td style="border-color: rgb(102, 102, 102); border-style: solid; border-width: 0.99609pt; margin: 0px; padding: 5pt; vertical-align: top;"><div dir="ltr" style="line-height: 1.656; margin-bottom: 10pt; margin-top: 10pt;"> <span style="background-color: transparent; font-family: "roboto"; font-size: 9pt; vertical-align: baseline; white-space: pre-wrap;">com.dailyworkout.tizi</span></div> </td><td style="border-color: rgb(102, 102, 102); border-style: solid; border-width: 0.99609pt; margin: 0px; padding: 5pt; vertical-align: top;"><div dir="ltr" style="line-height: 1.656; margin-bottom: 10pt; margin-top: 10pt;"> <span style="background-color: transparent; font-family: "roboto"; font-size: 9pt; vertical-align: baseline; white-space: pre-wrap;">7c6af091a7b0f04fb5b212bd3c180d<wbr></wbr>dcc6abf7cd77478fd22595e5b7aa7c<wbr></wbr>fd9f</span></div> </td><td style="border-color: rgb(102, 102, 102); border-style: solid; border-width: 0.99609pt; margin: 0px; padding: 5pt; vertical-align: top;"><div dir="ltr" style="line-height: 1.656; margin-bottom: 10pt; margin-top: 10pt;"> <span style="background-color: transparent; font-family: "roboto"; font-size: 9pt; vertical-align: baseline; white-space: pre-wrap;">404b4d1a7176e219eaa457b0050b40<wbr></wbr>81c22a9a1a</span></div> </td></tr> <tr style="height: 21pt;"><td style="border-color: rgb(102, 102, 102); border-style: solid; border-width: 0.99609pt; margin: 0px; padding: 5pt; vertical-align: top;"><div dir="ltr" style="line-height: 1.656; margin-bottom: 10pt; margin-top: 10pt;"> <span style="background-color: transparent; font-family: "roboto"; font-size: 9pt; vertical-align: baseline; white-space: pre-wrap;">com.system.update.systemupdate</span></div> </td><td style="border-color: rgb(102, 102, 102); border-style: solid; border-width: 0.99609pt; margin: 0px; padding: 5pt; vertical-align: top;"><div dir="ltr" style="line-height: 1.656; margin-bottom: 10pt; margin-top: 10pt;"> <span style="background-color: transparent; font-family: "roboto"; font-size: 10pt; vertical-align: baseline; white-space: pre-wrap;">7a956c754f003a219ea1d2205de3ef<wbr></wbr>5bc354419985a487254b8aeb865442<wbr></wbr>a55e</span></div> </td><td style="border-color: rgb(102, 102, 102); border-style: solid; border-width: 0.99609pt; margin: 0px; padding: 5pt; vertical-align: top;"><div dir="ltr" style="line-height: 1.656; margin-bottom: 10pt; margin-top: 10pt;"> <span style="background-color: transparent; font-family: "roboto"; font-size: 9pt; vertical-align: baseline; white-space: pre-wrap;">4d2962ac1f6551435709a5a874595d<wbr></wbr>855b1fa8ab</span></div> </td></tr> </tbody></table> </div> </div> <div> <b><br /></b></div> <div> <b><br /></b></div> <div> <b>Additional digests linked to Tizi</b></div> <div> <b><br /></b></div> <div> To encourage further research in the security community, here are some sample digests of exploits and utilities that were used or abused by Tizi.</div> <div> <br /></div> <div> <table style="background-color: white; border-collapse: collapse; border: none; color: #222222; font-family: arial, sans-serif; font-size: 12.8px;"><colgroup><col width="116"></col><col width="507"></col></colgroup><tbody> <tr style="height: 22pt;"><td style="background-color: #efefef; border-color: rgb(102, 102, 102); border-style: solid; border-width: 0.99609pt; margin: 0px; padding: 5pt; vertical-align: top;"><div dir="ltr" style="line-height: 1.44; margin-bottom: 10pt; margin-top: 10pt;"> <span style="background-color: transparent; color: black; font-family: "roboto"; font-size: 11pt; font-weight: 700; vertical-align: baseline; white-space: pre-wrap;">Filename</span></div> </td><td style="background-color: #efefef; border-color: rgb(102, 102, 102); border-style: solid; border-width: 0.99609pt; margin: 0px; padding: 5pt; vertical-align: top;"><div dir="ltr" style="line-height: 1.44; margin-bottom: 10pt; margin-top: 10pt;"> <span style="background-color: transparent; color: black; font-family: "roboto"; font-size: 11pt; font-weight: 700; vertical-align: baseline; white-space: pre-wrap;">SHA256 digest</span></div> </td></tr> <tr style="height: 21pt;"><td style="border-color: rgb(102, 102, 102); border-style: solid; border-width: 0.99609pt; margin: 0px; padding: 5pt; vertical-align: top;"><div dir="ltr" style="line-height: 1.656; margin-bottom: 10pt; margin-top: 10pt;"> <span style="background-color: transparent; color: black; font-family: "roboto"; font-size: 9pt; vertical-align: baseline; white-space: pre-wrap;">run_root_shell</span></div> </td><td style="border-color: rgb(102, 102, 102); border-style: solid; border-width: 0.99609pt; margin: 0px; padding: 5pt; vertical-align: top;"><div dir="ltr" style="line-height: 1.656; margin-bottom: 10pt; margin-top: 10pt;"> <span style="background-color: transparent; color: black; font-family: "roboto"; font-size: 10pt; vertical-align: baseline; white-space: pre-wrap;">f2e45ea50fc71b62d9ea59990ced75<wbr></wbr>5636286121437ced6237aff9098138<wbr></wbr>8f6a</span></div> </td></tr> <tr style="height: 21pt;"><td style="border-color: rgb(102, 102, 102); border-style: solid; border-width: 0.99609pt; margin: 0px; padding: 5pt; vertical-align: top;"><div dir="ltr" style="line-height: 1.656; margin-bottom: 10pt; margin-top: 10pt;"> <span style="background-color: transparent; color: black; font-family: "roboto"; font-size: 9pt; vertical-align: baseline; white-space: pre-wrap;">iovyroot</span></div> </td><td style="border-color: rgb(102, 102, 102); border-style: solid; border-width: 0.99609pt; margin: 0px; padding: 5pt; vertical-align: top;"><div dir="ltr" style="line-height: 1.656; margin-bottom: 10pt; margin-top: 10pt;"> <span style="background-color: transparent; color: black; font-family: "roboto"; font-size: 10pt; vertical-align: baseline; white-space: pre-wrap;">4d0887f41d0de2f31459c14e3133de<wbr></wbr>bcdf758ad8bbe57128d3bec2c907f2<wbr></wbr>acf3</span></div> </td></tr> <tr style="height: 21pt;"><td style="border-color: rgb(102, 102, 102); border-style: solid; border-width: 0.99609pt; margin: 0px; padding: 5pt; vertical-align: top;"><div dir="ltr" style="line-height: 1.656; margin-bottom: 10pt; margin-top: 10pt;"> <span style="background-color: transparent; color: black; font-family: "roboto"; font-size: 9pt; vertical-align: baseline; white-space: pre-wrap;">filesbetyangu.tar</span></div> </td><td style="border-color: rgb(102, 102, 102); border-style: solid; border-width: 0.99609pt; margin: 0px; padding: 5pt; vertical-align: top;"><div dir="ltr" style="line-height: 1.656; margin-bottom: 10pt; margin-top: 10pt;"> <span style="background-color: transparent; color: black; font-family: "roboto"; font-size: 10pt; vertical-align: baseline; white-space: pre-wrap;">9869871ed246d5670ebca02bb265a5<wbr></wbr>84f998f461db0283103ba58d4a6503<wbr></wbr>33be</span></div> </td></tr> </tbody></table> </div> <span itemprop='author' itemscope='itemscope' itemtype='http://schema.org/Person'> <meta content='https://plus.google.com/116899029375914044550' itemprop='url'/> </span> </script> <noscript> <span class="byline-author">Posted by Anthony Desnos, Megan Ruthven, and Richard Neal, Google Play Protect security engineers and Clement Lecigne, Threat Analysis Group</span><br /> <br /> Google is constantly working to improve our systems that protect users from Potentially Harmful Applications (PHAs). Usually, PHA authors attempt to install their harmful apps on as many devices as possible. However, a few PHA authors spend substantial effort, time, and money to create and install their harmful app on a small number of devices to achieve a certain goal.<br /> <br /> This blog post covers Tizi, a backdoor family with some rooting capabilities that was used in a targeted attack against devices in African countries, specifically: Kenya, Nigeria, and Tanzania. We'll talk about how the Google Play Protect and Threat Analysis teams worked together to detect and investigate Tizi-infected apps and remove and block them from Android devices.<br /> <b>What is Tizi?</b><br /> <br /> Tizi is a fully featured backdoor that installs spyware to steal sensitive data from popular social media applications. The Google Play Protect security team discovered this family in September 2017 when device scans found an app with rooting capabilities that exploited old vulnerabilities. The team used this app to find more applications in the Tizi family, the oldest of which is from October 2015. The Tizi app developer also created a website and used social media to encourage more app installs from Google Play and third-party websites.<br /> <br /> Here is an example social media post promoting a Tizi-infected app:<br /> <div class="separator" style="clear: both; text-align: center;"> <a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgH92m4Au9DcIPCqBxuzfH3QIWzE3iCy8DynJgiHUahOopKHKWu5WB5RliV-nOIo0ssA8iXZfLXFn0IeFkVRlpjjNNNJZQrMVfNbrJYMLsoaDPtDXm7U4evxPhg0lIqMlkJ_lh5ea4GzkKQ/s1600/tizi1.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="688" data-original-width="1194" height="230" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgH92m4Au9DcIPCqBxuzfH3QIWzE3iCy8DynJgiHUahOopKHKWu5WB5RliV-nOIo0ssA8iXZfLXFn0IeFkVRlpjjNNNJZQrMVfNbrJYMLsoaDPtDXm7U4evxPhg0lIqMlkJ_lh5ea4GzkKQ/s400/tizi1.png" width="400" /></a></div> <div class="separator" style="clear: both; text-align: left;"> <br /></div> <div style="text-align: left;"> <b>What is the scope of Tizi?</b></div> <div style="text-align: left;"> <br /></div> <div class="separator" style="clear: both; text-align: center;"> <a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg11pn1olboggLIVE39J02soyAaJlYUXyxzurLsGg66CHX-8-jx7gFEQLPYelHJAGoL9Uv7cd4CYR6l7PcUE-ey4p2QJ0U_L2RH4VJoUdL8a-HipkvQlotFeaGd2mfEleSFHONIYGfSCAak/s1600/Tizi2.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="405" data-original-width="850" height="304" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg11pn1olboggLIVE39J02soyAaJlYUXyxzurLsGg66CHX-8-jx7gFEQLPYelHJAGoL9Uv7cd4CYR6l7PcUE-ey4p2QJ0U_L2RH4VJoUdL8a-HipkvQlotFeaGd2mfEleSFHONIYGfSCAak/s640/Tizi2.png" width="640" /></a></div> <div class="separator" style="clear: both; text-align: center;"> <br /></div> <div style="text-align: left;"> <b>What are we doing?</b></div> <div style="text-align: left;"> <br /></div> <div style="text-align: left;"> To protect Android devices and users, we used Google Play Protect to disable Tizi-infected apps on affected devices and have notified users of all known affected devices. The developers' accounts have been suspended from Play.</div> <div style="text-align: left;"> <br /></div> <div style="text-align: left;"> The Google Play Protect team also used information and signals from the Tizi apps to update Google's <a href="https://source.android.com/security/reports/Google_Android_Security_2016_Report_Final.pdf">on-device security services</a> and the systems that search for PHAs. These enhancements have been enabled for all users of our security services and increases coverage for Google Play users and the rest of the Android ecosystem.</div> <div style="text-align: left;"> <br /></div> <div style="text-align: left;"> Additionally, there is more technical information below to help the security industry in our collective work against PHAs.</div> <div style="text-align: left;"> <b><br /></b></div> <div style="text-align: left;"> <b><br /></b></div> <div style="text-align: left;"> <b>What do I need to do?</b></div> <div style="text-align: left;"> <br /></div> <div style="text-align: left;"> Through our investigation, we identified around 1,300 devices affected by Tizi. To reduce the chance of your device being affected by PHAs and other threats, we recommend these 5 basic steps:</div> <div style="text-align: left;"> </div> <ul> <li><b>Check permissions:</b> Be cautious with apps that request unreasonable permissions. For example, a flashlight app shouldn't need access to send SMS messages.</li> <li><b><a href="https://support.google.com/nexus/answer/2819522">Enable a secure lock screen</a></b>: Pick a PIN, pattern, or password that is easy for you to remember and hard for others to guess.</li> <li><b><a href="https://support.google.com/nexus/answer/4457705">Update your device</a></b>: Keep your device up-to-date with the latest security patches. Tizi exploited older and publicly known security vulnerabilities, so devices that have up-to-date security patches are less exposed to this kind of attack.</li> <li><b><a href="https://support.google.com/accounts/answer/2812853">Google Play Protect</a></b>: Ensure Google Play Protect is enabled.</li> <li><b><a href="https://www.google.com/android/devicemanager">Locate your device</a></b>: Practice finding your device, because you are far more likely to lose your device than install a PHA.</li> </ul> <div> <b><br /></b></div> <div> <b>How does Tizi work?</b></div> <div> <b><br /></b></div> <div> The Google Play Protect team had previously classified some samples as spyware or backdoor PHAs without connecting them as a family. The early Tizi variants didn't have rooting capabilities or obfuscation, but later variants did.</div> <div> <br /></div> <div> After gaining root, Tizi steals sensitive data from popular social media apps like Facebook, Twitter, WhatsApp, Viber, Skype, LinkedIn, and Telegram. It usually first contacts its command-and-control servers by sending an SMS with the device's GPS coordinates to a specific number. Subsequent command-and-control communications are normally performed over regular HTTPS, though in some specific versions, Tizi uses the <a href="https://en.wikipedia.org/wiki/MQTT">MQTT</a> messaging protocol with a custom server. The backdoor contains various capabilities common to commercial spyware, such as recording calls from WhatsApp, Viber, and Skype; sending and receiving SMS messages; and accessing calendar events, call log, contacts, photos, Wi-Fi encryption keys, and a list of all installed apps. Tizi apps can also record ambient audio and take pictures without displaying the image on the device's screen.</div> <div> <br /></div> <div> Tizi can root the device by exploiting one of the following local vulnerabilities:</div> <div> <ul> <li>CVE-2012-4220</li> <li>CVE-2013-2596</li> <li>CVE-2013-2597</li> <li>CVE-2013-2595</li> <li>CVE-2013-2094</li> <li>CVE-2013-6282</li> <li>CVE-2014-3153</li> <li>CVE-2015-3636</li> <li>CVE-2015-1805</li> </ul> <div> Most of these vulnerabilities target older chipsets, devices, and Android versions. All of the listed vulnerabilities are fixed on devices with a security patch level of April 2016 or later, and most of them were patched considerably prior to this date. Devices with this patch level or later are far less exposed to Tizi's capabilities. If a Tizi app is unable to take control of a device because the vulnerabilities it tries to use are are all patched, it will still attempt to perform some actions through the high level of permissions it asks the user to grant to it, mainly around reading and sending SMS messages and monitoring, redirecting, and preventing outgoing phone calls.</div> </div> <div> <br /></div> <div> <b><br /></b></div> <div> <b>Samples uploaded to VirusTotal</b></div> <div> <b><br /></b></div> <div> To encourage further research in the security community, here are some sample applications embedding Tizi that were already on VirusTotal.</div> <div> <br /></div> <div> <div dir="ltr" style="background-color: white; color: #222222; font-family: arial, sans-serif; font-size: 12.8px; margin-left: 0pt;"> <table style="border-collapse: collapse; border: none;"><colgroup><col width="203"></col><col width="219"></col><col width="202"></col></colgroup><tbody> <tr style="height: 22pt;"><td style="background-color: #efefef; border-color: rgb(102, 102, 102); border-style: solid; border-width: 0.99609pt; margin: 0px; padding: 5pt; vertical-align: top;"><div dir="ltr" style="line-height: 1.44; margin-bottom: 10pt; margin-top: 10pt;"> <span style="background-color: transparent; font-family: "roboto"; font-size: 11pt; font-weight: 700; vertical-align: baseline; white-space: pre-wrap;">Package name</span></div> </td><td style="background-color: #efefef; border-color: rgb(102, 102, 102); border-style: solid; border-width: 0.99609pt; margin: 0px; padding: 5pt; vertical-align: top;"><div dir="ltr" style="line-height: 1.44; margin-bottom: 10pt; margin-top: 10pt;"> <span style="background-color: transparent; font-family: "roboto"; font-size: 11pt; font-weight: 700; vertical-align: baseline; white-space: pre-wrap;">SHA256 digest</span></div> </td><td style="background-color: #efefef; border-color: rgb(102, 102, 102); border-style: solid; border-width: 0.99609pt; margin: 0px; padding: 5pt; vertical-align: top;"><div dir="ltr" style="line-height: 1.44; margin-bottom: 10pt; margin-top: 10pt;"> <span style="background-color: transparent; font-family: "roboto"; font-size: 11pt; font-weight: 700; vertical-align: baseline; white-space: pre-wrap;">SHA1 certificate</span></div> </td></tr> <tr style="height: 21pt;"><td style="border-color: rgb(102, 102, 102); border-style: solid; border-width: 0.99609pt; margin: 0px; padding: 5pt; vertical-align: top;"><div dir="ltr" style="line-height: 1.656; margin-bottom: 10pt; margin-top: 10pt;"> <span style="background-color: transparent; font-family: "roboto"; font-size: 9pt; vertical-align: baseline; white-space: pre-wrap;">com.press.nasa.com.tanofresh</span></div> </td><td style="border-color: rgb(102, 102, 102); border-style: solid; border-width: 0.99609pt; margin: 0px; padding: 5pt; vertical-align: top;"><div dir="ltr" style="line-height: 1.656; margin-bottom: 10pt; margin-top: 10pt;"> <span style="background-color: transparent; font-family: "roboto"; font-size: 9pt; vertical-align: baseline; white-space: pre-wrap;">4d780a6fc18458311250d4d1edc750<wbr></wbr>468fdb9b3e4c950dce5b35d4567b47<wbr></wbr>d4a7</span></div> </td><td style="border-color: rgb(102, 102, 102); border-style: solid; border-width: 0.99609pt; margin: 0px; padding: 5pt; vertical-align: top;"><div dir="ltr" style="line-height: 1.656; margin-bottom: 10pt; margin-top: 10pt;"> <span style="background-color: transparent; font-family: "roboto"; font-size: 9pt; vertical-align: baseline; white-space: pre-wrap;">816bbee3cab5eed00b8bd16df56032<wbr></wbr>a96e243201</span></div> </td></tr> <tr style="height: 21pt;"><td style="border-color: rgb(102, 102, 102); border-style: solid; border-width: 0.99609pt; margin: 0px; padding: 5pt; vertical-align: top;"><div dir="ltr" style="line-height: 1.656; margin-bottom: 10pt; margin-top: 10pt;"> <span style="background-color: transparent; font-family: "roboto"; font-size: 9pt; vertical-align: baseline; white-space: pre-wrap;">com.dailyworkout.tizi</span></div> </td><td style="border-color: rgb(102, 102, 102); border-style: solid; border-width: 0.99609pt; margin: 0px; padding: 5pt; vertical-align: top;"><div dir="ltr" style="line-height: 1.656; margin-bottom: 10pt; margin-top: 10pt;"> <span style="background-color: transparent; font-family: "roboto"; font-size: 9pt; vertical-align: baseline; white-space: pre-wrap;">7c6af091a7b0f04fb5b212bd3c180d<wbr></wbr>dcc6abf7cd77478fd22595e5b7aa7c<wbr></wbr>fd9f</span></div> </td><td style="border-color: rgb(102, 102, 102); border-style: solid; border-width: 0.99609pt; margin: 0px; padding: 5pt; vertical-align: top;"><div dir="ltr" style="line-height: 1.656; margin-bottom: 10pt; margin-top: 10pt;"> <span style="background-color: transparent; font-family: "roboto"; font-size: 9pt; vertical-align: baseline; white-space: pre-wrap;">404b4d1a7176e219eaa457b0050b40<wbr></wbr>81c22a9a1a</span></div> </td></tr> <tr style="height: 21pt;"><td style="border-color: rgb(102, 102, 102); border-style: solid; border-width: 0.99609pt; margin: 0px; padding: 5pt; vertical-align: top;"><div dir="ltr" style="line-height: 1.656; margin-bottom: 10pt; margin-top: 10pt;"> <span style="background-color: transparent; font-family: "roboto"; font-size: 9pt; vertical-align: baseline; white-space: pre-wrap;">com.system.update.systemupdate</span></div> </td><td style="border-color: rgb(102, 102, 102); border-style: solid; border-width: 0.99609pt; margin: 0px; padding: 5pt; vertical-align: top;"><div dir="ltr" style="line-height: 1.656; margin-bottom: 10pt; margin-top: 10pt;"> <span style="background-color: transparent; font-family: "roboto"; font-size: 10pt; vertical-align: baseline; white-space: pre-wrap;">7a956c754f003a219ea1d2205de3ef<wbr></wbr>5bc354419985a487254b8aeb865442<wbr></wbr>a55e</span></div> </td><td style="border-color: rgb(102, 102, 102); border-style: solid; border-width: 0.99609pt; margin: 0px; padding: 5pt; vertical-align: top;"><div dir="ltr" style="line-height: 1.656; margin-bottom: 10pt; margin-top: 10pt;"> <span style="background-color: transparent; font-family: "roboto"; font-size: 9pt; vertical-align: baseline; white-space: pre-wrap;">4d2962ac1f6551435709a5a874595d<wbr></wbr>855b1fa8ab</span></div> </td></tr> </tbody></table> </div> </div> <div> <b><br /></b></div> <div> <b><br /></b></div> <div> <b>Additional digests linked to Tizi</b></div> <div> <b><br /></b></div> <div> To encourage further research in the security community, here are some sample digests of exploits and utilities that were used or abused by Tizi.</div> <div> <br /></div> <div> <table style="background-color: white; border-collapse: collapse; border: none; color: #222222; font-family: arial, sans-serif; font-size: 12.8px;"><colgroup><col width="116"></col><col width="507"></col></colgroup><tbody> <tr style="height: 22pt;"><td style="background-color: #efefef; border-color: rgb(102, 102, 102); border-style: solid; border-width: 0.99609pt; margin: 0px; padding: 5pt; vertical-align: top;"><div dir="ltr" style="line-height: 1.44; margin-bottom: 10pt; margin-top: 10pt;"> <span style="background-color: transparent; color: black; font-family: "roboto"; font-size: 11pt; font-weight: 700; vertical-align: baseline; white-space: pre-wrap;">Filename</span></div> </td><td style="background-color: #efefef; border-color: rgb(102, 102, 102); border-style: solid; border-width: 0.99609pt; margin: 0px; padding: 5pt; vertical-align: top;"><div dir="ltr" style="line-height: 1.44; margin-bottom: 10pt; margin-top: 10pt;"> <span style="background-color: transparent; color: black; font-family: "roboto"; font-size: 11pt; font-weight: 700; vertical-align: baseline; white-space: pre-wrap;">SHA256 digest</span></div> </td></tr> <tr style="height: 21pt;"><td style="border-color: rgb(102, 102, 102); border-style: solid; border-width: 0.99609pt; margin: 0px; padding: 5pt; vertical-align: top;"><div dir="ltr" style="line-height: 1.656; margin-bottom: 10pt; margin-top: 10pt;"> <span style="background-color: transparent; color: black; font-family: "roboto"; font-size: 9pt; vertical-align: baseline; white-space: pre-wrap;">run_root_shell</span></div> </td><td style="border-color: rgb(102, 102, 102); border-style: solid; border-width: 0.99609pt; margin: 0px; padding: 5pt; vertical-align: top;"><div dir="ltr" style="line-height: 1.656; margin-bottom: 10pt; margin-top: 10pt;"> <span style="background-color: transparent; color: black; font-family: "roboto"; font-size: 10pt; vertical-align: baseline; white-space: pre-wrap;">f2e45ea50fc71b62d9ea59990ced75<wbr></wbr>5636286121437ced6237aff9098138<wbr></wbr>8f6a</span></div> </td></tr> <tr style="height: 21pt;"><td style="border-color: rgb(102, 102, 102); border-style: solid; border-width: 0.99609pt; margin: 0px; padding: 5pt; vertical-align: top;"><div dir="ltr" style="line-height: 1.656; margin-bottom: 10pt; margin-top: 10pt;"> <span style="background-color: transparent; color: black; font-family: "roboto"; font-size: 9pt; vertical-align: baseline; white-space: pre-wrap;">iovyroot</span></div> </td><td style="border-color: rgb(102, 102, 102); border-style: solid; border-width: 0.99609pt; margin: 0px; padding: 5pt; vertical-align: top;"><div dir="ltr" style="line-height: 1.656; margin-bottom: 10pt; margin-top: 10pt;"> <span style="background-color: transparent; color: black; font-family: "roboto"; font-size: 10pt; vertical-align: baseline; white-space: pre-wrap;">4d0887f41d0de2f31459c14e3133de<wbr></wbr>bcdf758ad8bbe57128d3bec2c907f2<wbr></wbr>acf3</span></div> </td></tr> <tr style="height: 21pt;"><td style="border-color: rgb(102, 102, 102); border-style: solid; border-width: 0.99609pt; margin: 0px; padding: 5pt; vertical-align: top;"><div dir="ltr" style="line-height: 1.656; margin-bottom: 10pt; margin-top: 10pt;"> <span style="background-color: transparent; color: black; font-family: "roboto"; font-size: 9pt; vertical-align: baseline; white-space: pre-wrap;">filesbetyangu.tar</span></div> </td><td style="border-color: rgb(102, 102, 102); border-style: solid; border-width: 0.99609pt; margin: 0px; padding: 5pt; vertical-align: top;"><div dir="ltr" style="line-height: 1.656; margin-bottom: 10pt; margin-top: 10pt;"> <span style="background-color: transparent; color: black; font-family: "roboto"; font-size: 10pt; vertical-align: baseline; white-space: pre-wrap;">9869871ed246d5670ebca02bb265a5<wbr></wbr>84f998f461db0283103ba58d4a6503<wbr></wbr>33be</span></div> </td></tr> </tbody></table> </div> <span itemprop='author' itemscope='itemscope' itemtype='http://schema.org/Person'> <meta content='https://plus.google.com/116899029375914044550' itemprop='url'/> </span> </noscript> </div> </div> <div class='share'> <span class='twitter-custom social-wrapper' data-href='http://twitter.com/share?text=Google Online Security Blog:Tizi: Detecting and blocking socially engineered spyware on Android&url=https://security.googleblog.com/2017/11/tizi-detecting-and-blocking-socially.html&via=google'> <img alt='Share on Twitter' height='24' src='https://www.gstatic.com/images/icons/material/system/2x/post_twitter_black_24dp.png' width='24'/> </span> <span class='fb-custom social-wrapper' data-href='https://www.facebook.com/sharer.php?u=https://security.googleblog.com/2017/11/tizi-detecting-and-blocking-socially.html'> <img alt='Share on Facebook' height='24' src='https://www.gstatic.com/images/icons/material/system/2x/post_facebook_black_24dp.png' width='24'/> </span> </div> <div class='comment-container'> <i class='comment-img material-icons'>  </i> <span class='cmt_count_iframe_holder' data-count='0' data-onclick='javascript:window.open(this.href, "bloggerPopup", "toolbar=0,location=0,statusbar=1,menubar=0,scrollbars=yes,width=640,height=500"); return false;' data-post-url='https://security.googleblog.com/2017/11/tizi-detecting-and-blocking-socially.html' data-url='https://security.googleblog.com/2017/11/tizi-detecting-and-blocking-socially.html' style='color: #4184F3;'></span> </div> <div class='post-footer'> <div class='cmt_iframe_holder' data-href='https://security.googleblog.com/2017/11/tizi-detecting-and-blocking-socially.html' data-viewtype='FILTERED_POSTMOD'></div> <a href='https://plus.google.com/112374322230920073195' rel='author' style='display:none;'> Google </a> <div class='label-footer'> <span class='labels-caption'> Labels: </span> <span class='labels'> <a class='label' href='https://security.googleblog.com/search/label/android%20security' rel='tag'> android security </a> </span> </div> </div> </div> <div class='post' data-id='4709812633277869449' itemscope='' itemtype='http://schema.org/BlogPosting'> <h2 class='title' itemprop='name'> <a href='https://security.googleblog.com/2017/11/lock-it-up-new-hardware-protections-for.html' itemprop='url' title='Lock it up! New hardware protections for your lock screen with the Google Pixel 2'> Lock it up! New hardware protections for your lock screen with the Google Pixel 2 </a> </h2> <div class='post-header'> <div class='published'> <span class='publishdate' itemprop='datePublished'> November 14, 2017 </span> </div> </div> <div class='post-body'> <div class='post-content' itemprop='articleBody'> <script type='text/template'> <span class="byline-author">Posted by Xiaowen Xin, Android Security Team</span><br /> The new Google Pixel 2 ships with a dedicated hardware security module designed to be robust against physical attacks. This hardware module performs lockscreen passcode verification and protects your lock screen better than software alone.<br /> <br /> To learn more about the new protections, let’s first review the role of the lock screen. Enabling a lock screen protects your data, not just against casual thieves, but also against sophisticated attacks. Many Android devices, including all Pixel phones, use your lockscreen passcode to derive the key that is then used to encrypt your data. Before you unlock your phone for the first time after a reboot, an attacker cannot recover the key (and hence your data) without knowing your passcode first. To protect against <a href="https://en.wikipedia.org/wiki/Brute-force_attack">brute-force</a> guessing your passcode, devices running Android 7.0+ verify your attempts in a secure environment that limits how often you can repeatedly guess. Only when the secure environment has successfully verified your passcode does it reveal a device and user-specific secret used to derive the disk encryption key.<br /> <br /> <b>Benefits of tamper-resistant hardware</b><br /> <b><br /></b> The goal of these protections is to prevent attackers from decrypting your data without knowing your passcode, but the protections are only as strong as the secure environment that verifies the passcode. Performing these types of security-critical operations in tamper-resistant hardware significantly increases the difficulty of attacking it.<br /> <div style="text-align: center;"> <div class="separator" style="clear: both; text-align: center;"> <a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjdYcLqSLVAGXkiXZD-pWU96t-If3G5jyuT1mq3Ntc3ffMwIyuHoJrm6g3sbRsZW8JQo5NUyCxpJdRYWR5kcf7zY9zQzzyluLScZ3pgtV_eIYH6RSb9fCQGx-JtETO3gGb7kdH3OC7UTiVI/s1600/pixel2.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="458" data-original-width="1000" height="289" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjdYcLqSLVAGXkiXZD-pWU96t-If3G5jyuT1mq3Ntc3ffMwIyuHoJrm6g3sbRsZW8JQo5NUyCxpJdRYWR5kcf7zY9zQzzyluLScZ3pgtV_eIYH6RSb9fCQGx-JtETO3gGb7kdH3OC7UTiVI/s640/pixel2.png" width="640" /></a></div> </div> Tamper-resistant hardware comes in the form of a discrete chip separate from the System on a Chip (SoC). It includes its own flash, RAM, and other resources inside a single package, so it can fully control its own execution. It can also detect and defend against outside attempts to physically tamper with it.<br /> <div> <br /></div> <div> In particular:<br /> <ul> <li>Because it has its own dedicated RAM, it’s robust against many side-channel information leakage attacks, such as those described in the <a href="https://eprint.iacr.org/2016/980.pdf">TruSpy cache side-channel paper</a>.</li> <li>Because it has its own dedicated flash, it’s harder to interfere with its ability to store state persistently.</li> <li>It loads its operating system and software directly from internal ROM and flash, and it controls all updates to it, so attackers can’t directly tamper with its software to inject malicious code.</li> <li>Tamper-resistant hardware is resilient against many physical fault injection techniques including attempts to run outside normal operating conditions, such as wrong voltage, wrong clock speed, or wrong temperature. This is standardized in specifications such as the <a href="https://www.commoncriteriaportal.org/files/ppfiles/ssvgpp01.pdf">SmartCard IC Platform Protection Profile</a>, and tamper-resistant hardware is often certified to these standards.</li> <li>Tamper-resistant hardware is usually housed in a package that is resistant to physical penetration and designed to resist side channel attacks, including power analysis, timing analysis, and electromagnetic sniffing, such as described in the <a href="https://eprint.iacr.org/2015/561.pdf">SoC it to EM paper</a>.</li> </ul> <div> <b>Security module in Pixel 2</b></div> <div> <br /></div> <div> The new Google Pixel 2 ships with a security module built using tamper-resistant hardware that protects your lock screen and your data against many sophisticated hardware attacks.</div> <div> <br /></div> <div> In addition to all the benefits already mentioned, the security module in Pixel 2 also helps protect you against software-only attacks:</div> <div> <ul> <li>Because it performs very few functions, it has a super small attack surface.</li> <li>With passcode verification happening in the security module, even in the event of a full compromise elsewhere, the attacker cannot derive your disk encryption key without compromising the security module first.</li> <li>The security module is designed so that nobody, including Google, can update the passcode verification logic to a weakened version without knowing your passcode first.</li> </ul> <div> <b>Summary</b></div> </div> <div> <b><br /></b></div> <div> Just like many other Google products, such as <a href="https://www.chromium.org/developers/design-documents/tpm-usage">Chromebooks</a> and <a href="https://cloudplatform.googleblog.com/2017/08/Titan-in-depth-security-in-plaintext.html">Cloud</a>, Android and Pixel are investing in additional hardware protections to make your device more secure. With the new Google Pixel 2, your data is safer against an entire class of sophisticated hardware attacks.</div> </div> <span itemprop='author' itemscope='itemscope' itemtype='http://schema.org/Person'> <meta content='https://plus.google.com/116899029375914044550' itemprop='url'/> </span> </script> <noscript> <span class="byline-author">Posted by Xiaowen Xin, Android Security Team</span><br /> The new Google Pixel 2 ships with a dedicated hardware security module designed to be robust against physical attacks. This hardware module performs lockscreen passcode verification and protects your lock screen better than software alone.<br /> <br /> To learn more about the new protections, let’s first review the role of the lock screen. Enabling a lock screen protects your data, not just against casual thieves, but also against sophisticated attacks. Many Android devices, including all Pixel phones, use your lockscreen passcode to derive the key that is then used to encrypt your data. Before you unlock your phone for the first time after a reboot, an attacker cannot recover the key (and hence your data) without knowing your passcode first. To protect against <a href="https://en.wikipedia.org/wiki/Brute-force_attack">brute-force</a> guessing your passcode, devices running Android 7.0+ verify your attempts in a secure environment that limits how often you can repeatedly guess. Only when the secure environment has successfully verified your passcode does it reveal a device and user-specific secret used to derive the disk encryption key.<br /> <br /> <b>Benefits of tamper-resistant hardware</b><br /> <b><br /></b> The goal of these protections is to prevent attackers from decrypting your data without knowing your passcode, but the protections are only as strong as the secure environment that verifies the passcode. Performing these types of security-critical operations in tamper-resistant hardware significantly increases the difficulty of attacking it.<br /> <div style="text-align: center;"> <div class="separator" style="clear: both; text-align: center;"> <a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjdYcLqSLVAGXkiXZD-pWU96t-If3G5jyuT1mq3Ntc3ffMwIyuHoJrm6g3sbRsZW8JQo5NUyCxpJdRYWR5kcf7zY9zQzzyluLScZ3pgtV_eIYH6RSb9fCQGx-JtETO3gGb7kdH3OC7UTiVI/s1600/pixel2.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="458" data-original-width="1000" height="289" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjdYcLqSLVAGXkiXZD-pWU96t-If3G5jyuT1mq3Ntc3ffMwIyuHoJrm6g3sbRsZW8JQo5NUyCxpJdRYWR5kcf7zY9zQzzyluLScZ3pgtV_eIYH6RSb9fCQGx-JtETO3gGb7kdH3OC7UTiVI/s640/pixel2.png" width="640" /></a></div> </div> Tamper-resistant hardware comes in the form of a discrete chip separate from the System on a Chip (SoC). It includes its own flash, RAM, and other resources inside a single package, so it can fully control its own execution. It can also detect and defend against outside attempts to physically tamper with it.<br /> <div> <br /></div> <div> In particular:<br /> <ul> <li>Because it has its own dedicated RAM, it’s robust against many side-channel information leakage attacks, such as those described in the <a href="https://eprint.iacr.org/2016/980.pdf">TruSpy cache side-channel paper</a>.</li> <li>Because it has its own dedicated flash, it’s harder to interfere with its ability to store state persistently.</li> <li>It loads its operating system and software directly from internal ROM and flash, and it controls all updates to it, so attackers can’t directly tamper with its software to inject malicious code.</li> <li>Tamper-resistant hardware is resilient against many physical fault injection techniques including attempts to run outside normal operating conditions, such as wrong voltage, wrong clock speed, or wrong temperature. This is standardized in specifications such as the <a href="https://www.commoncriteriaportal.org/files/ppfiles/ssvgpp01.pdf">SmartCard IC Platform Protection Profile</a>, and tamper-resistant hardware is often certified to these standards.</li> <li>Tamper-resistant hardware is usually housed in a package that is resistant to physical penetration and designed to resist side channel attacks, including power analysis, timing analysis, and electromagnetic sniffing, such as described in the <a href="https://eprint.iacr.org/2015/561.pdf">SoC it to EM paper</a>.</li> </ul> <div> <b>Security module in Pixel 2</b></div> <div> <br /></div> <div> The new Google Pixel 2 ships with a security module built using tamper-resistant hardware that protects your lock screen and your data against many sophisticated hardware attacks.</div> <div> <br /></div> <div> In addition to all the benefits already mentioned, the security module in Pixel 2 also helps protect you against software-only attacks:</div> <div> <ul> <li>Because it performs very few functions, it has a super small attack surface.</li> <li>With passcode verification happening in the security module, even in the event of a full compromise elsewhere, the attacker cannot derive your disk encryption key without compromising the security module first.</li> <li>The security module is designed so that nobody, including Google, can update the passcode verification logic to a weakened version without knowing your passcode first.</li> </ul> <div> <b>Summary</b></div> </div> <div> <b><br /></b></div> <div> Just like many other Google products, such as <a href="https://www.chromium.org/developers/design-documents/tpm-usage">Chromebooks</a> and <a href="https://cloudplatform.googleblog.com/2017/08/Titan-in-depth-security-in-plaintext.html">Cloud</a>, Android and Pixel are investing in additional hardware protections to make your device more secure. With the new Google Pixel 2, your data is safer against an entire class of sophisticated hardware attacks.</div> </div> <span itemprop='author' itemscope='itemscope' itemtype='http://schema.org/Person'> <meta content='https://plus.google.com/116899029375914044550' itemprop='url'/> </span> </noscript> </div> </div> <div class='share'> <span class='twitter-custom social-wrapper' data-href='http://twitter.com/share?text=Google Online Security Blog:Lock it up! New hardware protections for your lock screen with the Google Pixel 2&url=https://security.googleblog.com/2017/11/lock-it-up-new-hardware-protections-for.html&via=google'> <img alt='Share on Twitter' height='24' src='https://www.gstatic.com/images/icons/material/system/2x/post_twitter_black_24dp.png' width='24'/> </span> <span class='fb-custom social-wrapper' data-href='https://www.facebook.com/sharer.php?u=https://security.googleblog.com/2017/11/lock-it-up-new-hardware-protections-for.html'> <img alt='Share on Facebook' height='24' src='https://www.gstatic.com/images/icons/material/system/2x/post_facebook_black_24dp.png' width='24'/> </span> </div> <div class='comment-container'> <i class='comment-img material-icons'>  </i> <span class='cmt_count_iframe_holder' data-count='0' data-onclick='javascript:window.open(this.href, "bloggerPopup", "toolbar=0,location=0,statusbar=1,menubar=0,scrollbars=yes,width=640,height=500"); return false;' data-post-url='https://security.googleblog.com/2017/11/lock-it-up-new-hardware-protections-for.html' data-url='https://security.googleblog.com/2017/11/lock-it-up-new-hardware-protections-for.html' style='color: #4184F3;'></span> </div> <div class='post-footer'> <div class='cmt_iframe_holder' data-href='https://security.googleblog.com/2017/11/lock-it-up-new-hardware-protections-for.html' data-viewtype='FILTERED_POSTMOD'></div> <a href='https://plus.google.com/112374322230920073195' rel='author' style='display:none;'> Google </a> <div class='label-footer'> </div> </div> </div> <div class='post' data-id='1796868066093998442' itemscope='' itemtype='http://schema.org/BlogPosting'> <h2 class='title' itemprop='name'> <a href='https://security.googleblog.com/2017/11/new-research-understanding-root-cause.html' itemprop='url' title='New research: Understanding the root cause of account takeover'> New research: Understanding the root cause of account takeover </a> </h2> <div class='post-header'> <div class='published'> <span class='publishdate' itemprop='datePublished'> November 9, 2017 </span> </div> </div> <div class='post-body'> <div class='post-content' itemprop='articleBody'> <script type='text/template'> <span class="byline-author">Posted by Kurt Thomas, Anti-Abuse Research; Angelika Moscicki, Account Security</span><br /> Account takeover, or ‘hijacking’, is unfortunately a common problem for users across the web. More than <a href="https://research.google.com/pubs/pub41941.html">15% of Internet users</a> have reported experiencing the takeover of an email or social networking account. However, despite its familiarity, there is a dearth of research about the root causes of hijacking.<br /> <br /> With Google accounts as a case-study, we teamed up with the University of California, Berkeley to better understand how hijackers attempt to take over accounts in the wild. From March 2016 to March 2017, we analyzed several black markets to see how hijackers steal passwords and other sensitive data. We’ve highlighted some important findings from our investigation below. We presented our study at the <a href="https://www.sigsac.org/ccs/CCS2017/">Conference on Computer and Communications Security (CCS)</a> and it’s now available <a href="https://research.google.com/pubs/pub46437.html">here</a>.<br /> <br /> What we learned from the research proved to be immediately useful. We applied its insights to our existing protections and secured 67 million Google accounts before they were abused. We’re sharing this information publicly so that other online services can better secure their users, and can also supplement their authentication systems with more protections beyond just passwords.<br /> <br /> <div class="separator" style="clear: both; text-align: center;"> <a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjx1QDvqu6PJKAZnvf1abD10Wc0WxjUgofsBW9vTJOv6P1lqQ48FIwVSy9yS6QycV3xICvh7XJ_8cG5Cm7eueIjIjNUJ2BGmFt07B4SPH7SMln9Do2-E21Wo7TSodktJNy4-y-w3DFzxEth/s1600/blog_infographic.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="840" data-original-width="1600" height="336" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjx1QDvqu6PJKAZnvf1abD10Wc0WxjUgofsBW9vTJOv6P1lqQ48FIwVSy9yS6QycV3xICvh7XJ_8cG5Cm7eueIjIjNUJ2BGmFt07B4SPH7SMln9Do2-E21Wo7TSodktJNy4-y-w3DFzxEth/s640/blog_infographic.png" width="640" /></a></div> <br /> <b>How hijackers steal passwords on the black market</b><br /> <br /> Our research tracked several black markets that traded third-party password breaches, as well as 25,000 blackhat tools used for phishing and keylogging. In total, these sources helped us identify 788,000 credentials stolen via keyloggers, 12 million credentials stolen via phishing, and 3.3 billion credentials exposed by third-party breaches.<br /> <br /> While our study focused on Google, these password stealing tactics pose a risk to all account-based online services. In the case of third-party data breaches, 12% of the exposed records included a Gmail address serving as a username and a password; of those passwords, 7% were valid due to reuse. When it comes to phishing and keyloggers, attackers frequently target Google accounts to varying success: 12-25% of attacks yield a valid password.<br /> <br /> However, because a password alone is rarely sufficient for gaining access to a Google account, increasingly sophisticated attackers also try to collect sensitive data that we may request when verifying an account holder’s identity. We found 82% of blackhat phishing tools and 74% of keyloggers attempted to collect a user’s IP address and location, while another 18% of tools collected phone numbers and device make and model.<br /> <br /> By ranking the relative risk to users, we found that phishing posed the greatest threat, followed by keyloggers, and finally third-party breaches.<br /> <br /> <b>Protecting our users from account takeover</b><br /> <br /> Our findings were clear: enterprising hijackers are constantly searching for, and are able to find, billions of different platforms’ usernames and passwords on black markets. While we have already applied these insights to our existing protections, our findings are yet another reminder that we must continuously evolve our defenses in order to stay ahead of these bad actors and keep users safe.<br /> <br /> For many years, we’ve applied a ‘defense in-depth’ approach to security—a layered series of constantly improving protections that automatically prevent, detect, and mitigate threats to keep your account safe.<br /> <br /> <i>Prevention</i><br /> <i><br /></i> A wide variety of safeguards help us to prevent attacks before they ever affect our users. For example, Safe Browsing, which now <a href="https://www.blog.google/topics/safety-security/safe-browsing-protecting-more-3-billion-devices-worldwide-automatically/">protects more than 3 billion devices</a>, alerts users before they visit a dangerous site or when they <a href="https://www.blog.google/topics/safety-security/fighting-phishing-smarter-protections/">click a link to a dangerous site within Gmail</a>. We recently announced the <a href="https://www.blog.google/topics/safety-security/googles-strongest-security-those-who-need-it-most/">Advanced Protection program</a> which provides extra security for users that are at elevated risk of attack.<br /> <br /> <i>Detection</i><br /> <i><br /></i> We monitor every login attempt to your account for suspicious activity. When there is a sign-in attempt from a device you’ve never used, or a location you don’t commonly access your account from, we’ll require additional information before granting access to your account. For example, if you sign in from a new laptop and you have a phone associated with you account, you will see a prompt—we’re calling these dynamic verification challenges—like this:<br /> <div class="separator" style="clear: both; text-align: center;"> <a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgd_hTZ2E8zkBIinFq-9b9dY18lDI4ECzvgSP0JHi3egrDrDoQV0GnL37dvOi9jk3Ju0CBtPKxw6WuEOcTZEjiYi_Dc4z2lMVWT0WSvRl3e2HrkryZlH2-eS2m9FY9c6_BvavImWbKUIuP9/s1600/pastedImage0.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1132" data-original-width="944" height="640" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgd_hTZ2E8zkBIinFq-9b9dY18lDI4ECzvgSP0JHi3egrDrDoQV0GnL37dvOi9jk3Ju0CBtPKxw6WuEOcTZEjiYi_Dc4z2lMVWT0WSvRl3e2HrkryZlH2-eS2m9FY9c6_BvavImWbKUIuP9/s640/pastedImage0.png" width="531" /></a></div> This challenge provides two-factor authentication on all suspicious logins, while mitigating the risk of account lockout.<br /> <br /> <i>Mitigation</i><br /> <br /> Finally, we regularly scan activity across Google’s suite of products for suspicious actions performed by hijackers and when we find any, we lock down the affected accounts to prevent any further damage as quickly as possible. We prevent or undo actions we attribute to account takeover, notify the affected user, and help them change their password and re-secure their account into a healthy state.<br /> <br /> <i>What you can do</i><br /> <br /> There are some simple steps you can take that make these defenses even stronger. Visit our <a href="//g.co/securitycheckup">Security Checkup</a> to make sure you have recovery information associated with your account, like a phone number. Allow Chrome to automatically generate passwords for your accounts and save them via <a href="https://get.google.com/smartlock/">Smart Lock</a>. We’re constantly working to improve these tools, and our automatic protections, to keep your data safe. <span itemprop='author' itemscope='itemscope' itemtype='http://schema.org/Person'> <meta content='https://plus.google.com/116899029375914044550' itemprop='url'/> </span> </script> <noscript> <span class="byline-author">Posted by Kurt Thomas, Anti-Abuse Research; Angelika Moscicki, Account Security</span><br /> Account takeover, or ‘hijacking’, is unfortunately a common problem for users across the web. More than <a href="https://research.google.com/pubs/pub41941.html">15% of Internet users</a> have reported experiencing the takeover of an email or social networking account. However, despite its familiarity, there is a dearth of research about the root causes of hijacking.<br /> <br /> With Google accounts as a case-study, we teamed up with the University of California, Berkeley to better understand how hijackers attempt to take over accounts in the wild. From March 2016 to March 2017, we analyzed several black markets to see how hijackers steal passwords and other sensitive data. We’ve highlighted some important findings from our investigation below. We presented our study at the <a href="https://www.sigsac.org/ccs/CCS2017/">Conference on Computer and Communications Security (CCS)</a> and it’s now available <a href="https://research.google.com/pubs/pub46437.html">here</a>.<br /> <br /> What we learned from the research proved to be immediately useful. We applied its insights to our existing protections and secured 67 million Google accounts before they were abused. We’re sharing this information publicly so that other online services can better secure their users, and can also supplement their authentication systems with more protections beyond just passwords.<br /> <br /> <div class="separator" style="clear: both; text-align: center;"> <a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjx1QDvqu6PJKAZnvf1abD10Wc0WxjUgofsBW9vTJOv6P1lqQ48FIwVSy9yS6QycV3xICvh7XJ_8cG5Cm7eueIjIjNUJ2BGmFt07B4SPH7SMln9Do2-E21Wo7TSodktJNy4-y-w3DFzxEth/s1600/blog_infographic.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="840" data-original-width="1600" height="336" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjx1QDvqu6PJKAZnvf1abD10Wc0WxjUgofsBW9vTJOv6P1lqQ48FIwVSy9yS6QycV3xICvh7XJ_8cG5Cm7eueIjIjNUJ2BGmFt07B4SPH7SMln9Do2-E21Wo7TSodktJNy4-y-w3DFzxEth/s640/blog_infographic.png" width="640" /></a></div> <br /> <b>How hijackers steal passwords on the black market</b><br /> <br /> Our research tracked several black markets that traded third-party password breaches, as well as 25,000 blackhat tools used for phishing and keylogging. In total, these sources helped us identify 788,000 credentials stolen via keyloggers, 12 million credentials stolen via phishing, and 3.3 billion credentials exposed by third-party breaches.<br /> <br /> While our study focused on Google, these password stealing tactics pose a risk to all account-based online services. In the case of third-party data breaches, 12% of the exposed records included a Gmail address serving as a username and a password; of those passwords, 7% were valid due to reuse. When it comes to phishing and keyloggers, attackers frequently target Google accounts to varying success: 12-25% of attacks yield a valid password.<br /> <br /> However, because a password alone is rarely sufficient for gaining access to a Google account, increasingly sophisticated attackers also try to collect sensitive data that we may request when verifying an account holder’s identity. We found 82% of blackhat phishing tools and 74% of keyloggers attempted to collect a user’s IP address and location, while another 18% of tools collected phone numbers and device make and model.<br /> <br /> By ranking the relative risk to users, we found that phishing posed the greatest threat, followed by keyloggers, and finally third-party breaches.<br /> <br /> <b>Protecting our users from account takeover</b><br /> <br /> Our findings were clear: enterprising hijackers are constantly searching for, and are able to find, billions of different platforms’ usernames and passwords on black markets. While we have already applied these insights to our existing protections, our findings are yet another reminder that we must continuously evolve our defenses in order to stay ahead of these bad actors and keep users safe.<br /> <br /> For many years, we’ve applied a ‘defense in-depth’ approach to security—a layered series of constantly improving protections that automatically prevent, detect, and mitigate threats to keep your account safe.<br /> <br /> <i>Prevention</i><br /> <i><br /></i> A wide variety of safeguards help us to prevent attacks before they ever affect our users. For example, Safe Browsing, which now <a href="https://www.blog.google/topics/safety-security/safe-browsing-protecting-more-3-billion-devices-worldwide-automatically/">protects more than 3 billion devices</a>, alerts users before they visit a dangerous site or when they <a href="https://www.blog.google/topics/safety-security/fighting-phishing-smarter-protections/">click a link to a dangerous site within Gmail</a>. We recently announced the <a href="https://www.blog.google/topics/safety-security/googles-strongest-security-those-who-need-it-most/">Advanced Protection program</a> which provides extra security for users that are at elevated risk of attack.<br /> <br /> <i>Detection</i><br /> <i><br /></i> We monitor every login attempt to your account for suspicious activity. When there is a sign-in attempt from a device you’ve never used, or a location you don’t commonly access your account from, we’ll require additional information before granting access to your account. For example, if you sign in from a new laptop and you have a phone associated with you account, you will see a prompt—we’re calling these dynamic verification challenges—like this:<br /> <div class="separator" style="clear: both; text-align: center;"> <a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgd_hTZ2E8zkBIinFq-9b9dY18lDI4ECzvgSP0JHi3egrDrDoQV0GnL37dvOi9jk3Ju0CBtPKxw6WuEOcTZEjiYi_Dc4z2lMVWT0WSvRl3e2HrkryZlH2-eS2m9FY9c6_BvavImWbKUIuP9/s1600/pastedImage0.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1132" data-original-width="944" height="640" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgd_hTZ2E8zkBIinFq-9b9dY18lDI4ECzvgSP0JHi3egrDrDoQV0GnL37dvOi9jk3Ju0CBtPKxw6WuEOcTZEjiYi_Dc4z2lMVWT0WSvRl3e2HrkryZlH2-eS2m9FY9c6_BvavImWbKUIuP9/s640/pastedImage0.png" width="531" /></a></div> This challenge provides two-factor authentication on all suspicious logins, while mitigating the risk of account lockout.<br /> <br /> <i>Mitigation</i><br /> <br /> Finally, we regularly scan activity across Google’s suite of products for suspicious actions performed by hijackers and when we find any, we lock down the affected accounts to prevent any further damage as quickly as possible. We prevent or undo actions we attribute to account takeover, notify the affected user, and help them change their password and re-secure their account into a healthy state.<br /> <br /> <i>What you can do</i><br /> <br /> There are some simple steps you can take that make these defenses even stronger. Visit our <a href="//g.co/securitycheckup">Security Checkup</a> to make sure you have recovery information associated with your account, like a phone number. Allow Chrome to automatically generate passwords for your accounts and save them via <a href="https://get.google.com/smartlock/">Smart Lock</a>. 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class='post-count-link' href='https://security.googleblog.com/2020/05/'> May </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2020/04/'> Apr </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2020/03/'> Mar </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2020/02/'> Feb </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2020/01/'> Jan </a> </div> <div class='items'> </div> </li> </ul> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class='intervalToggle'> <span class='new-toggle' href='javascript:void(0)'> <i class='material-icons arrow'>  </i> </span> <a class='toggle' href='javascript:void(0)' style='display: none'> <span class='zippy'> <i class='material-icons'>  </i>   </span> </a> <a class='post-count-link' href='https://security.googleblog.com/2019/'> 2019 </a> </div> <div class='items'> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2019/12/'> Dec </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2019/11/'> Nov </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2019/10/'> Oct </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2019/09/'> Sep </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2019/08/'> Aug </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2019/07/'> Jul </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2019/06/'> Jun </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2019/05/'> May </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2019/04/'> Apr </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2019/03/'> Mar </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2019/02/'> Feb </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2019/01/'> Jan </a> </div> <div class='items'> </div> </li> </ul> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class='intervalToggle'> <span class='new-toggle' href='javascript:void(0)'> <i class='material-icons arrow'>  </i> </span> <a class='toggle' href='javascript:void(0)' style='display: none'> <span class='zippy'> <i class='material-icons'>  </i>   </span> </a> <a class='post-count-link' href='https://security.googleblog.com/2018/'> 2018 </a> </div> <div class='items'> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2018/12/'> Dec </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2018/11/'> Nov </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2018/10/'> Oct </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2018/09/'> Sep </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2018/08/'> Aug </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2018/07/'> Jul </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2018/06/'> Jun </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2018/05/'> May </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2018/04/'> Apr </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2018/03/'> Mar </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2018/02/'> Feb </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2018/01/'> Jan </a> </div> <div class='items'> </div> </li> </ul> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate expanded'> <div class='intervalToggle'> <span class='new-toggle' href='javascript:void(0)'> <i class='material-icons arrow'>  </i> </span> <a class='toggle' href='javascript:void(0)' style='display: none'> <span class='zippy toggle-open'> <i class='material-icons'>  </i>   </span> </a> <a class='post-count-link' href='https://security.googleblog.com/2017/'> 2017 </a> </div> <div class='items'> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2017/12/'> Dec </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate expanded'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2017/11/'> Nov </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2017/10/'> Oct </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2017/09/'> Sep </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2017/07/'> Jul </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2017/06/'> Jun </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2017/05/'> May </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2017/04/'> Apr </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2017/03/'> Mar </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2017/02/'> Feb </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2017/01/'> Jan </a> </div> <div class='items'> </div> </li> </ul> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class='intervalToggle'> <span class='new-toggle' href='javascript:void(0)'> <i class='material-icons arrow'>  </i> </span> <a class='toggle' href='javascript:void(0)' style='display: none'> <span class='zippy'> <i class='material-icons'>  </i>   </span> </a> <a class='post-count-link' href='https://security.googleblog.com/2016/'> 2016 </a> </div> <div class='items'> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2016/12/'> Dec </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2016/11/'> Nov </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2016/10/'> Oct </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2016/09/'> Sep </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2016/08/'> Aug </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2016/07/'> Jul </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2016/06/'> Jun </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2016/05/'> May </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2016/04/'> Apr </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2016/03/'> Mar </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2016/02/'> Feb </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2016/01/'> Jan </a> </div> <div class='items'> </div> </li> </ul> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class='intervalToggle'> <span class='new-toggle' href='javascript:void(0)'> <i class='material-icons arrow'>  </i> </span> <a class='toggle' href='javascript:void(0)' style='display: none'> <span class='zippy'> <i class='material-icons'>  </i>   </span> </a> <a class='post-count-link' href='https://security.googleblog.com/2015/'> 2015 </a> </div> <div class='items'> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2015/12/'> Dec </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2015/11/'> Nov </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2015/10/'> Oct </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2015/09/'> Sep </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2015/08/'> Aug </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2015/07/'> Jul </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2015/06/'> Jun </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2015/05/'> May </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2015/04/'> Apr </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2015/03/'> Mar </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2015/02/'> Feb </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2015/01/'> Jan </a> </div> <div class='items'> </div> </li> </ul> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class='intervalToggle'> <span class='new-toggle' href='javascript:void(0)'> <i class='material-icons arrow'>  </i> </span> <a class='toggle' href='javascript:void(0)' style='display: none'> <span class='zippy'> <i class='material-icons'>  </i>   </span> </a> <a class='post-count-link' href='https://security.googleblog.com/2014/'> 2014 </a> </div> <div class='items'> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2014/12/'> Dec </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2014/11/'> Nov </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2014/10/'> Oct </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2014/09/'> Sep </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2014/08/'> Aug </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2014/07/'> Jul </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2014/06/'> Jun </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2014/04/'> Apr </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2014/03/'> Mar </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2014/02/'> Feb </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2014/01/'> Jan </a> </div> <div class='items'> </div> </li> </ul> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class='intervalToggle'> <span class='new-toggle' href='javascript:void(0)'> <i class='material-icons arrow'>  </i> </span> <a class='toggle' href='javascript:void(0)' style='display: none'> <span class='zippy'> <i class='material-icons'>  </i>   </span> </a> <a class='post-count-link' href='https://security.googleblog.com/2013/'> 2013 </a> </div> <div class='items'> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2013/12/'> Dec </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2013/11/'> Nov </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2013/10/'> Oct </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2013/08/'> Aug </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2013/06/'> Jun </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2013/05/'> May </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2013/04/'> Apr </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2013/03/'> Mar </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2013/02/'> Feb </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2013/01/'> Jan </a> </div> <div class='items'> </div> </li> </ul> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class='intervalToggle'> <span class='new-toggle' href='javascript:void(0)'> <i class='material-icons arrow'>  </i> </span> <a class='toggle' href='javascript:void(0)' style='display: none'> <span class='zippy'> <i class='material-icons'>  </i>   </span> </a> <a class='post-count-link' href='https://security.googleblog.com/2012/'> 2012 </a> </div> <div class='items'> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2012/12/'> Dec </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2012/09/'> Sep </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2012/08/'> Aug </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2012/06/'> Jun </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2012/05/'> May </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2012/04/'> Apr </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2012/03/'> Mar </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2012/02/'> Feb </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2012/01/'> Jan </a> </div> <div class='items'> </div> </li> </ul> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class='intervalToggle'> <span class='new-toggle' href='javascript:void(0)'> <i class='material-icons arrow'>  </i> </span> <a class='toggle' href='javascript:void(0)' style='display: none'> <span class='zippy'> <i class='material-icons'>  </i>   </span> </a> <a class='post-count-link' href='https://security.googleblog.com/2011/'> 2011 </a> </div> <div class='items'> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2011/12/'> Dec </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2011/11/'> Nov </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2011/10/'> Oct </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2011/09/'> Sep </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2011/08/'> Aug </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2011/07/'> Jul </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2011/06/'> Jun </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2011/05/'> May </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2011/04/'> Apr </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2011/03/'> Mar </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2011/02/'> Feb </a> </div> <div class='items'> </div> </li> </ul> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class='intervalToggle'> <span class='new-toggle' href='javascript:void(0)'> <i class='material-icons arrow'>  </i> </span> <a class='toggle' href='javascript:void(0)' style='display: none'> <span class='zippy'> <i class='material-icons'>  </i>   </span> </a> <a class='post-count-link' href='https://security.googleblog.com/2010/'> 2010 </a> </div> <div class='items'> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2010/11/'> Nov </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2010/10/'> Oct </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2010/09/'> Sep </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2010/08/'> Aug </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2010/07/'> Jul </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2010/05/'> May </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2010/04/'> Apr </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2010/03/'> Mar </a> </div> <div class='items'> </div> </li> </ul> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class='intervalToggle'> <span class='new-toggle' href='javascript:void(0)'> <i class='material-icons arrow'>  </i> </span> <a class='toggle' href='javascript:void(0)' style='display: none'> <span 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class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2009/06/'> Jun </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://security.googleblog.com/2009/03/'> Mar </a> </div> <div class='items'> </div> </li> </ul> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class='intervalToggle'> <span class='new-toggle' href='javascript:void(0)'> <i class='material-icons arrow'>  </i> </span> <a class='toggle' href='javascript:void(0)' style='display: none'> <span class='zippy'> <i class='material-icons'>  </i>   </span> </a> <a class='post-count-link' href='https://security.googleblog.com/2008/'> 2008 </a> </div> <div class='items'> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' 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