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class="vector-toc-text"> <span class="vector-toc-numb">2</span> <span>Authenticating the webhook notification</span> </div> </a> <ul id="toc-Authenticating_the_webhook_notification-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-See_also" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#See_also"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>See also</span> </div> </a> <ul id="toc-See_also-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-References" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#References"> <div class="vector-toc-text"> <span class="vector-toc-numb">4</span> <span>References</span> </div> </a> <ul id="toc-References-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-External_links" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#External_links"> <div class="vector-toc-text"> <span class="vector-toc-numb">5</span> <span>External links</span> </div> </a> <ul id="toc-External_links-sublist" class="vector-toc-list"> </ul> </li> </ul> </div> </div> </nav> </div> </div> <div class="mw-content-container"> <main id="content" class="mw-body"> <header class="mw-body-header vector-page-titlebar"> <nav aria-label="Contents" class="vector-toc-landmark"> <div id="vector-page-titlebar-toc" class="vector-dropdown vector-page-titlebar-toc vector-button-flush-left" title="Table of Contents" > <input type="checkbox" id="vector-page-titlebar-toc-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-titlebar-toc" class="vector-dropdown-checkbox " aria-label="Toggle the table of contents" > <label id="vector-page-titlebar-toc-label" for="vector-page-titlebar-toc-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet 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Available in 12 languages" > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-12" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">12 languages</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D8%AE%D8%B7%D8%A7%D9%81_%D8%A7%D9%84%D9%88%D9%8A%D8%A8" title="خطاف الويب – Arabic" lang="ar" hreflang="ar" data-title="خطاف الويب" data-language-autonym="العربية" data-language-local-name="Arabic" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Webhook" title="Webhook – Catalan" lang="ca" hreflang="ca" data-title="Webhook" data-language-autonym="Català" data-language-local-name="Catalan" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Webhook" title="Webhook – German" lang="de" hreflang="de" data-title="Webhook" data-language-autonym="Deutsch" data-language-local-name="German" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Webhook" title="Webhook – Spanish" lang="es" hreflang="es" data-title="Webhook" data-language-autonym="Español" data-language-local-name="Spanish" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Webhook" title="Webhook – French" lang="fr" hreflang="fr" data-title="Webhook" data-language-autonym="Français" data-language-local-name="French" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%EC%9B%B9%ED%9B%85" title="웹훅 – Korean" lang="ko" hreflang="ko" data-title="웹훅" data-language-autonym="한국어" data-language-local-name="Korean" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Webhook" title="Webhook – Italian" lang="it" hreflang="it" data-title="Webhook" data-language-autonym="Italiano" data-language-local-name="Italian" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/Webhook" title="Webhook – Japanese" lang="ja" hreflang="ja" data-title="Webhook" data-language-autonym="日本語" data-language-local-name="Japanese" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Webhook" title="Webhook – Portuguese" lang="pt" hreflang="pt" data-title="Webhook" data-language-autonym="Português" data-language-local-name="Portuguese" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/Webhook" title="Webhook – Russian" lang="ru" hreflang="ru" data-title="Webhook" data-language-autonym="Русский" data-language-local-name="Russian" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/Webhook" title="Webhook – Ukrainian" lang="uk" hreflang="uk" data-title="Webhook" data-language-autonym="Українська" data-language-local-name="Ukrainian" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/%E7%BD%91%E7%BB%9C%E9%92%A9%E5%AD%90" title="网络钩子 – Chinese" lang="zh" hreflang="zh" data-title="网络钩子" data-language-autonym="中文" data-language-local-name="Chinese" class="interlanguage-link-target"><span>中文</span></a></li> </ul> <div class="after-portlet after-portlet-lang"><span class="wb-langlinks-edit wb-langlinks-link"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q2553302#sitelinks-wikipedia" title="Edit interlanguage links" class="wbc-editpage">Edit links</a></span></div> </div> </div> </div> </header> <div class="vector-page-toolbar"> <div class="vector-page-toolbar-container"> <div id="left-navigation"> <nav aria-label="Namespaces"> <div id="p-associated-pages" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-associated-pages" > <div class="vector-menu-content"> <ul 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this page [k]" accesskey="k"><span>Related changes</span></a></li><li id="t-upload" class="mw-list-item"><a href="//en.wikipedia.org/wiki/Wikipedia:File_Upload_Wizard" title="Upload files [u]" accesskey="u"><span>Upload file</span></a></li><li id="t-permalink" class="mw-list-item"><a href="/w/index.php?title=Webhook&oldid=1281158592" title="Permanent link to this revision of this page"><span>Permanent link</span></a></li><li id="t-info" class="mw-list-item"><a href="/w/index.php?title=Webhook&action=info" title="More information about this page"><span>Page information</span></a></li><li id="t-cite" class="mw-list-item"><a href="/w/index.php?title=Special:CiteThisPage&page=Webhook&id=1281158592&wpFormIdentifier=titleform" title="Information on how to cite this page"><span>Cite this page</span></a></li><li id="t-urlshortener" class="mw-list-item"><a href="/w/index.php?title=Special:UrlShortener&url=https%3A%2F%2Fen.wikipedia.org%2Fwiki%2FWebhook"><span>Get shortened 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class="vector-menu-heading"> In other projects </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="t-wikibase" class="wb-otherproject-link wb-otherproject-wikibase-dataitem mw-list-item"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q2553302" title="Structured data on this page hosted by Wikidata [g]" accesskey="g"><span>Wikidata item</span></a></li> </ul> </div> </div> </div> </div> </div> </div> </nav> </div> </div> </div> <div class="vector-column-end"> <div class="vector-sticky-pinned-container"> <nav class="vector-page-tools-landmark" aria-label="Page tools"> <div id="vector-page-tools-pinned-container" class="vector-pinned-container"> </div> </nav> <nav class="vector-appearance-landmark" aria-label="Appearance"> <div id="vector-appearance-pinned-container" class="vector-pinned-container"> <div id="vector-appearance" class="vector-appearance vector-pinnable-element"> <div class="vector-pinnable-header vector-appearance-pinnable-header vector-pinnable-header-pinned" data-feature-name="appearance-pinned" data-pinnable-element-id="vector-appearance" data-pinned-container-id="vector-appearance-pinned-container" data-unpinned-container-id="vector-appearance-unpinned-container" > <div class="vector-pinnable-header-label">Appearance</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-appearance.pin">move to sidebar</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-appearance.unpin">hide</button> </div> </div> </div> </nav> </div> </div> <div id="bodyContent" class="vector-body" aria-labelledby="firstHeading" data-mw-ve-target-container> <div class="vector-body-before-content"> <div class="mw-indicators"> </div> <div id="siteSub" class="noprint">From Wikipedia, the free encyclopedia</div> </div> <div id="contentSub"><div id="mw-content-subtitle"></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="en" dir="ltr"><div class="shortdescription nomobile noexcerpt noprint searchaux" style="display:none">Method of web development</div> <p>In <a href="/wiki/Web_development" title="Web development">web development</a>, a <b>webhook</b> is a method of augmenting or altering the behavior of a <a href="/wiki/Web_page" title="Web page">web page</a> or <a href="/wiki/Web_application" title="Web application">web application</a> with custom <a href="/wiki/Callback_(computer_programming)" title="Callback (computer programming)">callbacks</a>. These callbacks may be maintained, modified, and managed by third-party users who need not be affiliated with the originating website or application. In 2007, <a href="/w/index.php?title=Jeff_Lindsay_(computer_programmer)&action=edit&redlink=1" class="new" title="Jeff Lindsay (computer programmer) (page does not exist)">Jeff Lindsay</a> coined the term <i>webhook</i> from the computer programming term <i><a href="/wiki/Hooking" title="Hooking">hook</a></i>.<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Function">Function</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Webhook&action=edit&section=1" title="Edit section: Function"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Webhooks are "user-defined HTTP callbacks".<sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> They are usually triggered by some event, such as pushing code to a repository,<sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> a purchase, a comment being posted to a blog<sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> and many more use cases.<sup id="cite_ref-5" class="reference"><a href="#cite_note-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> When that event occurs, the source site makes an HTTP request to the URL configured for the webhook. Users can configure them to cause events on one site to invoke behavior on another. </p><p>Common uses are to trigger builds with <a href="/wiki/Continuous_integration" title="Continuous integration">continuous integration</a> systems<sup id="cite_ref-6" class="reference"><a href="#cite_note-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> or to notify <a href="/wiki/Bug_tracking_system" title="Bug tracking system">bug tracking systems</a>.<sup id="cite_ref-7" class="reference"><a href="#cite_note-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> Because webhooks use HTTP, they can be integrated into web services without adding new infrastructure.<sup id="cite_ref-8" class="reference"><a href="#cite_note-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Authenticating_the_webhook_notification">Authenticating the webhook notification</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Webhook&action=edit&section=2" title="Edit section: Authenticating the webhook notification"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>When the client (the originating website or application) makes a webhook call to the third-party user's server, the incoming POST request should be authenticated to avoid a <a href="/wiki/Spoofing_attack" title="Spoofing attack">spoofing attack</a> and its timestamp verified to avoid a <a href="/wiki/Replay_attack" title="Replay attack">replay attack</a>.<sup id="cite_ref-9" class="reference"><a href="#cite_note-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup> Different techniques to authenticate the client are used: </p> <ul><li>HTTP <a href="/wiki/Basic_access_authentication" title="Basic access authentication">basic authentication</a> can be used to authenticate the client.<sup id="cite_ref-10" class="reference"><a href="#cite_note-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup></li> <li>The webhook can include information about what type of event it is, and a <a href="/wiki/Shared_secret" title="Shared secret">shared secret</a> or <a href="/wiki/Digital_signature" title="Digital signature">digital signature</a> to verify the webhook.</li> <li>An <a href="/wiki/HMAC" title="HMAC">HMAC</a> signature can be included as a HTTP header. GitHub,<sup id="cite_ref-11" class="reference"><a href="#cite_note-11"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup> Stripe<sup id="cite_ref-12" class="reference"><a href="#cite_note-12"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup> and Facebook<sup id="cite_ref-13" class="reference"><a href="#cite_note-13"><span class="cite-bracket">[</span>13<span class="cite-bracket">]</span></a></sup> use this technique.</li> <li><a href="/wiki/Mutual_authentication" title="Mutual authentication">Mutual TLS authentication</a> can be used when the connection is established. The endpoint (the server) can then verify the client's certificate.<sup id="cite_ref-14" class="reference"><a href="#cite_note-14"><span class="cite-bracket">[</span>14<span class="cite-bracket">]</span></a></sup></li></ul> <p>The sender may choose to keep a constant list of <a href="/wiki/IP_address" title="IP address">IP addresses</a> from which requests will be sent. This is not a sufficient security measure on its own, but it is useful for when the receiving endpoint is behind a <a href="/wiki/Firewall_(computing)" title="Firewall (computing)">firewall</a> or <a href="/wiki/Network_address_translation" title="Network address translation">NAT</a>. </p> <div class="mw-heading mw-heading2"><h2 id="See_also">See also</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Webhook&action=edit&section=3" title="Edit section: See also"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/Application_programming_interface" class="mw-redirect" title="Application programming interface">Application programming interface</a></li> <li><a href="/wiki/Open_API" title="Open API">Open API</a></li> <li><a href="/wiki/Mashup_(web_application_hybrid)" title="Mashup (web application hybrid)">Mashup (web application hybrid)</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="References">References</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Webhook&action=edit&section=4" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output 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.cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><cite class="citation cs2"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20180630220036/http://progrium.com/blog/2007/05/03/web-hooks-to-revolutionize-the-web/"><i>Web hook to revolutionize the web</i></a>, 3 May 2007, archived from <a rel="nofollow" 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Svix Inc<span class="reference-accessdate">. Retrieved <span class="nowrap">September 12,</span> 2021</span>. <q>Another potential security hole is what's called replay attacks.</q></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Svix&rft.atitle=Why+Verify&rft_id=https%3A%2F%2Fdocs.svix.com%2Freceiving%2Fverifying-payloads%2Fwhy&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWebhook" class="Z3988"></span></span> </li> <li id="cite_note-10"><span class="mw-cite-backlink"><b><a href="#cite_ref-10">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222" /><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://www.docusign.com/blog/dsdev-docusign-connect-basic-authentication-support/">"DocuSign Connect Now Includes Basic Authentication Support"</a>. <i>DocuSign</i>. DocuSign, Inc. 16 November 2017<span class="reference-accessdate">. Retrieved <span class="nowrap">January 15,</span> 2020</span>. <q>the Connect notification service has been updated to support the Basic Authentication scheme with customers' Connect servers (listeners).</q></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=DocuSign&rft.atitle=DocuSign+Connect+Now+Includes+Basic+Authentication+Support&rft.date=2017-11-16&rft_id=https%3A%2F%2Fwww.docusign.com%2Fblog%2Fdsdev-docusign-connect-basic-authentication-support%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWebhook" class="Z3988"></span></span> </li> <li id="cite_note-11"><span class="mw-cite-backlink"><b><a href="#cite_ref-11">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222" /><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://docs.github.com/en/developers/webhooks-and-events/webhooks/securing-your-webhooks#validating-payloads-from-github">"Securing your webhooks"</a>. <i>Github</i>. Github, Inc<span class="reference-accessdate">. Retrieved <span class="nowrap">September 12,</span> 2021</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Github&rft.atitle=Securing+your+webhooks&rft_id=https%3A%2F%2Fdocs.github.com%2Fen%2Fdevelopers%2Fwebhooks-and-events%2Fwebhooks%2Fsecuring-your-webhooks%23validating-payloads-from-github&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWebhook" class="Z3988"></span></span> </li> <li id="cite_note-12"><span class="mw-cite-backlink"><b><a href="#cite_ref-12">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222" /><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://stripe.com/docs/webhooks/signatures">"Checking Webhook Signatures"</a>. <i>Stripe</i>. Stripe, Inc<span class="reference-accessdate">. Retrieved <span class="nowrap">12 May</span> 2019</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Stripe&rft.atitle=Checking+Webhook+Signatures&rft_id=https%3A%2F%2Fstripe.com%2Fdocs%2Fwebhooks%2Fsignatures&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWebhook" class="Z3988"></span></span> </li> <li id="cite_note-13"><span class="mw-cite-backlink"><b><a href="#cite_ref-13">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222" /><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://developers.facebook.com/docs/graph-api/webhooks/getting-started#validate-payloads">"Getting Started - Graph API - Documentation - Facebook for Developers"</a>. <i>Facebook</i>. Facebook, Inc<span class="reference-accessdate">. Retrieved <span class="nowrap">12 May</span> 2019</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Facebook&rft.atitle=Getting+Started+-+Graph+API+-+Documentation+-+Facebook+for+Developers&rft_id=https%3A%2F%2Fdevelopers.facebook.com%2Fdocs%2Fgraph-api%2Fwebhooks%2Fgetting-started%23validate-payloads&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWebhook" class="Z3988"></span></span> </li> <li id="cite_note-14"><span class="mw-cite-backlink"><b><a href="#cite_ref-14">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222" /><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://www.docusign.com/blog/dsdev-mutual-tls-stuff-know/">"Mutual TLS: Stuff you should know"</a>. <i>DocuSign</i>. DocuSign, Inc<span class="reference-accessdate">. Retrieved <span class="nowrap">January 15,</span> 2020</span>. <q>Mutual TLS plus Client Access Control enables your listener app to ensure that the Connect notification message was sent by DocuSign and that it wasn't modified en route.</q></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=DocuSign&rft.atitle=Mutual+TLS%3A+Stuff+you+should+know&rft_id=https%3A%2F%2Fwww.docusign.com%2Fblog%2Fdsdev-mutual-tls-stuff-know%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWebhook" class="Z3988"></span></span> </li> </ol></div></div> <div class="mw-heading mw-heading2"><h2 id="External_links">External links</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Webhook&action=edit&section=5" title="Edit section: External links"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a rel="nofollow" class="external text" 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