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<!DOCTYPE html> <html lang="ja"> <head prefix="og: https://ogp.me/ns# fb: https://ogp.me/ns/fb# article: https://ogp.me/ns/article#"> <link rel="dns-prefetch" href="https://i.gzn.jp"> <meta charset="utf-8"> <title>Microsoftのソースコードと内部システムにロシア政府系ハッカー「Midnight Blizzard」がアクセスしていたことが判明 - GIGAZINE</title> <meta property="og:site_name" content="GIGAZINE" /> <meta property="og:title" content="Microsoftのソースコードと内部システムにロシア政府系ハッカー「Midnight Blizzard」がアクセスしていたことが判明" /> <meta property="og:type" content="article" /> <meta property="og:url" content="https://gigazine.net/news/20240311-microsoft-russian-hackers-stolen-source-code/" /> <meta property="fb:pages" content="514043575350122" /> <meta name="robots" content="max-image-preview:large"> <script data-cfasync="false" async src="https://securepubads.g.doubleclick.net/tag/js/gpt.js"></script> <meta name="description" content="Microsoftは2024年1月に、NOBELIUMやCozy Bear、APT29などとしても知られるロシアの国家支援を受けたハッカー集団「Midnight Blizzard」からハッキングを受けたことを発表しました。さらに、Microsoftは3月8日の続報で、Midnight Blizzardがハッキングで得た情報を利用して自社のネットワークに侵入し、ソースコードや内部システムを侵害したことを報告しました。" /> <meta property="og:image" content="https://i.gzn.jp/img/2024/03/11/microsoft-russian-hackers-stolen-source-code/00.jpg" /> <meta property="og:description" content="Microsoftは2024年1月に、NOBELIUMやCozy Bear、APT29などとしても知られるロシアの国家支援を受けたハッカー集団「Midnight Blizzard」からハッキングを受けたことを発表しました。さらに、Microsoftは3月8日の続報で、Midnight Blizzardがハッキングで得た情報を利用して自社のネットワークに侵入し、ソースコードや内部システムを侵害したことを報告しました。" /> <meta property="twitter:account_id" content="9334242" /> <meta name="twitter:card" content="summary"> <meta name="twitter:site" content="@gigazine"> <meta name="robots" content="max-image-preview:large"> <link rel="preload" as="image" href="https://i.gzn.jp/img/2024/03/11/microsoft-russian-hackers-stolen-source-code/00_m.jpg" /> <link rel="canonical" href="https://gigazine.net/news/20240311-microsoft-russian-hackers-stolen-source-code/"> <link rel="alternate" hreflang="en" 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0 1-4.74-.48zM432 256a16 16 0 1 0 16 16 16 16 0 0 0-16-16zM306.5 0a96 96 0 0 0-88.81 132.51A162.64 162.64 0 0 1 256 128h128a104.31 104.31 0 0 1 12.71.88A96.06 96.06 0 0 0 306.5 0z" class="fa-primary"/> </symbol> </defs> </svg> <div id="donate_title_close" class="donate_title" style="display:none;"> ▼サーバー運営を助ける支援をお願いします </div> <div id="donate_title_open" class="donate_title"> ▼サーバー運営を助ける支援をお願いします </div> <div id="donate_large"> <div style="text-align: center; display: grid; grid-template-columns: 30px 20px auto 20px auto; grid-template-rows: auto auto; width: 400px; max-width: 100%; margin: auto;"> <div class="amount_options" id="onetime"> <a id="donate_link" onclick="localStorage.setItem('donateClickDate', new Date().toString());dataLayer.push({'event': 'donateLinkClicked'});" href="https://donate.stripe.com/5kA5msbys6u42Gs14k" target="_blank" class="button-exp-style donate_button"> <svg class="donate_icon"><use xlink:href="#pg-bank"></svg> <span class="price_note">900円</span><span class="small_note">(うち手数料33円)</span></a> <input type="range" min="1" max="7" value="3" id="donation_slider"> <script> const priceData = [ { text: `<svg class="donate_icon"><use xlink:href="#pg-bank"></svg><span class="price_note">300円</span><span class="small_note">(うち手数料11円)</span>`, url: "https://donate.stripe.com/fZe4io1XSbOo0yk9AB" }, { text: `<svg class="donate_icon"><use xlink:href="#pg-bank"></svg><span class="price_note">600円</span><span class="small_note">(うち手数料22円)</span>`, url: "https://donate.stripe.com/00g4io6e8bOo1CoeV9" }, { text: `<svg class="donate_icon"><use xlink:href="#pg-bank"></svg><span class="price_note">900円</span><span class="small_note">(うち手数料33円)</span>`, url: "https://donate.stripe.com/5kA5msbys6u42Gs14k" }, { text: `<svg class="donate_icon"><use xlink:href="#pg-bank"></svg><span class="price_note">1500円</span><span class="small_note">(うち手数料54円)</span>`, url: "https://donate.stripe.com/14k4io7ic6u46WI147" }, { text: `<svg class="donate_icon"><use xlink:href="#pg-bank"></svg><span class="price_note">3000円</span><span class="small_note">(うち手数料108円)</span>`, url: "https://donate.stripe.com/28o6qweKE9GgftedQV" }, { text: `<svg class="donate_icon"><use xlink:href="#pg-bank"></svg><span class="price_note">5000円</span><span class="small_note">(うち手数料180円)</span>`, url: "https://donate.stripe.com/bIY4ioauo7y8ch24gm" }, { text: `<svg class="donate_icon"><use xlink:href="#pg-bank"></svg><span class="price_note">1万円</span><span class="small_note">(うち手数料360円)</span>`, url: "https://donate.stripe.com/cN25ms1XSf0AfteeV1" }, { text: `<svg class="donate_icon"><use xlink:href="#pg-bank"></svg><span class="price_note">テスト</span><span class="small_note">(うち手数料XX円)</span>`, url: "https://donate.stripe.com/test_7sIaIy7n5arT90c7st" } ]; const slider = document.getElementById("donation_slider"); const button = document.getElementById("donate_link"); slider.addEventListener("input", e=>{ button.innerHTML = priceData[e.target.value - 1].text; button.href = priceData[e.target.value - 1].url + window.location.search; }); button.href = button.href + window.location.search; </script> </div> </div> <div class="payment-marks"> <img src="https://i.gzn.jp/img/gsc/payment/visa.png" border="0"> <img src="https://i.gzn.jp/img/gsc/payment/master.png" border="0"> <img src="https://i.gzn.jp/img/gsc/payment/amex.png" border="0"> <img src="https://i.gzn.jp/img/gsc/payment/apple-pay.svg" border="0"> <img src="https://i.gzn.jp/img/gsc/payment/g-pay.png" border="0"> </div> <p> 私たちは過去最高の大ヒットを記録しているのと裏腹に価格高騰などの影響でサーバー運営が非常に苦しい状態です。打てる手は全て打ちましたが、それでもまだ危機的状況にあります。なので、GIGAZINEの物理的なサーバーたちを、たった1円でも良いので読者の皆さまに支援してもらえればとっても助かります！今すぐ1回払いの寄付は上のボタンから、毎月寄付は<b><a href="https://gigazine.net/club/" target="_blank">こちらのリンク先から！</a></b><br> </p> </div> </div> <script src="https://i.gzn.jp/img/-side-ad.js"></script> <script> { let adblock = false; if(!document.getElementById('F1qAYhOnM7DF6mEd')){ adblock = true; } const showDonateWrapper = ()=>{ 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<style> .p-category{ position: absolute; right: 2px; } </style> <h1 class="title">Microsoftのソースコードと内部システムにロシア政府系ハッカー「Midnight Blizzard」がアクセスしていたことが判明</h1>  <p class="preface"></p><a href="https://i.gzn.jp/img/2024/03/11/microsoft-russian-hackers-stolen-source-code/00.jpg" target="_blank"><img src="https://i.gzn.jp/img/2024/03/11/microsoft-russian-hackers-stolen-source-code/00_m.jpg" border="0" class="lzsmall img-standard-size" alt=""></a><p class="preface"> <br /> Microsoftは2024年1月に、NOBELIUMやCozy Bear、APT29などとしても知られるロシアの国家支援を受けたハッカー集団「Midnight Blizzard」からハッキングを受けたことを<b><a href="https://gigazine.net/news/20240121-microsoft-email-hack-russian-intelligence-group/" target="_blank">発表</a></b>しました。さらに、Microsoftは3月8日の続報で、Midnight Blizzardがハッキングで得た情報を利用して自社のネットワークに侵入し、ソースコードや内部システムを侵害したことを報告しました。<br /> <br /> <b>Update on Microsoft Actions Following Attack by Nation State Actor Midnight Blizzard | MSRC Blog | Microsoft Security Response Center</b><br /> <b><a href="https://msrc.microsoft.com/blog/2024/03/update-on-microsoft-actions-following-attack-by-nation-state-actor-midnight-blizzard/" target="_blank">https://msrc.microsoft.com/blog/2024/03/update-on-microsoft-actions-following-attack-by-nation-state-actor-midnight-blizzard/</a></b><br /> <br /> <b>Microsoft says Kremlin-backed hackers accessed its source and internal systems | Ars Technica</b><br /> <b><a href="https://arstechnica.com/security/2024/03/microsoft-says-kremlin-backed-hackers-accessed-its-source-and-internal-systems/" target="_blank">https://arstechnica.com/security/2024/03/microsoft-says-kremlin-backed-hackers-accessed-its-source-and-internal-systems/</a></b><br /> <br /> <b>Microsoft says Russian hackers breached its systems, accessed source code</b><br /> <b><a href="https://www.bleepingcomputer.com/news/microsoft/microsoft-says-russian-hackers-breached-its-systems-accessed-source-code/" target="_blank">https://www.bleepingcomputer.com/news/microsoft/microsoft-says-russian-hackers-breached-its-systems-accessed-source-code/</a></b><br /> <br /> Microsoftが1月に発表したMidnight Blizzardのハッキングでは、従業員のメールアカウントが<b><a href="https://cybersecurity-jp.com/column/30629" target="_blank">パスワードスプレー攻撃</a></b>によって侵害され、メール文や添付ファイルなどが流出しました。<br /> <br /> パスワードスプレー攻撃とは、複数のアカウントに対してよく使われるパスワードでのログインを試行するというもの。2要素認証を使えばリスクを減らすことができますが、攻撃対象となった「既存の非運用テストテナントアカウント」、つまり廃止された後に削除されないまま残されていたアカウントでは2要素認証が有効化されていませんでした。<br /> </p><a href="https://i.gzn.jp/img/2024/03/11/microsoft-russian-hackers-stolen-source-code/change-your-password-privacy-policy-protection-sec-2023-11-27-04-54-24-utc.jpg" target="_blank"><img src="https://i.gzn.jp/img/2024/03/11/microsoft-russian-hackers-stolen-source-code/change-your-password-privacy-policy-protection-sec-2023-11-27-04-54-24-utc_m.jpg" border="0" class="lzsmall" alt=""></a><p class="preface"> <br /> さらに、Microsoftは今回の発表で、「ここ数週間、Midnight Blizzardが不正にアクセスし、または不正アクセスを試みるために、最初に企業電子メールシステムから流出した情報を使用しているという証拠を確認しました、これには、ソースコードリポジトリと内部システムの一部へのアクセスが含まれます」と述べて、1月のハッキングで流出した情報によりソースコードなどが盗み取られたことを明かしました。<br /> <br /> これまでのところ、Microsoftがホストしている顧客向けシステムが侵害された証拠は発見されていないとのことですが、Midnight Blizzardは以前に入手した情報を後続の攻撃に悪用し続けており、元から高かったパスワードスプレー攻撃の頻度をさらに高くしているとMicrosoftは報告しています。<br /> <br /> 「このことは、アカウントへのログインに使用されたパスワードが、以前の侵害によって収集された資格情報で推測できるほど脆弱(ぜいじゃく)なことを意味しています」と、IT系ニュースサイトのArs Technicaは指摘しました。<br /> </p><a href="https://i.gzn.jp/img/2024/03/11/microsoft-russian-hackers-stolen-source-code/man-office-male-business-laptop-computer-businessm-2024-01-12-16-59-04-utc.jpg" target="_blank"><img src="https://i.gzn.jp/img/2024/03/11/microsoft-russian-hackers-stolen-source-code/man-office-male-business-laptop-computer-businessm-2024-01-12-16-59-04-utc_m.jpg" border="0" class="lzsmall" alt=""></a><p class="preface"> <br /> Microsoftは、Midnight Blizzardが機密情報の使用を試みているのが明白であることや、それらの機密の一部が流出したMicrosoftと顧客との間でやりとりされた電子メールで共有されたものであることから、顧客に連絡を取って対策を講じることを支援しているとしています。<br /> <br /> 「機密」が何を指すのかは明かされていませんが、IT系ニュースサイトのBleepingComputerによると、認証トークンやAPIキー、または資格情報の可能性があるとのことです。<br /> <br /> Microsoftは「現在も行われているMidnight Blizzardの攻撃の特徴は、この脅威アクターが豊富なリソースや調整能力を重点的に投入していることです。また、Midnight Blizzardは攻撃対象としている地域の情報を蓄積し、攻撃能力を高めている可能性があります。これは、特に高度な国家攻撃であるという点で、前例のないグローバルな脅威が高まっているという状況を反映しています」と述べて、ロシア政府が後ろ盾になっている国際的なサイバー脅威の危険性を改めて強調しました。<br /> </p>  <div style="text-align: center; margin: 10px auto 0px;"><div id="URLClip" style="width:300px; height:40px; border: 2px solid #bbb; border-radius: 3px; background: white; padding: 8px 0; text-align: center; position: relative; cursor: pointer; color: #222; font-size: 14px; font-weight: 700; display: inline-block; vertical-align: middle;">この記事のタイトルとURLをコピーする</div></div> </div>  <div id="EndFooter"> <div id='EF_Left'>  <div id='div-gpt-ad-1524638328920-0'> <script> googletag.cmd.push(function() 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