{"id":215780,"date":"2025-06-12T06:15:47","date_gmt":"2025-06-12T11:15:47","guid":{"rendered":"https:\/\/lifeboat.com\/blog\/2025\/06\/over-80000-microsoft-entra-id-accounts-targeted-using-open-source-teamfiltration-tool"},"modified":"2025-06-12T06:15:47","modified_gmt":"2025-06-12T11:15:47","slug":"over-80000-microsoft-entra-id-accounts-targeted-using-open-source-teamfiltration-tool","status":"publish","type":"post","link":"https:\/\/lifeboat.com\/blog\/2025\/06\/over-80000-microsoft-entra-id-accounts-targeted-using-open-source-teamfiltration-tool","title":{"rendered":"Over 80,000 Microsoft Entra ID Accounts Targeted Using Open-Source TeamFiltration Tool"},"content":{"rendered":"<p><a class=\"aligncenter blog-photo\" href=\"https:\/\/lifeboat.com\/blog.images\/over-80000-microsoft-entra-id-accounts-targeted-using-open-source-teamfiltration-tool.jpg\"><\/a><\/p>\n<p>Cybersecurity researchers have uncovered a new account takeover (ATO) campaign that leverages an open-source penetration testing framework called TeamFiltration to breach Microsoft Entra ID (formerly Azure Active Directory) user accounts.<\/p>\n<p>The activity, codenamed <strong>UNK_SneakyStrike<\/strong> by Proofpoint, has targeted over 80,000 user accounts across hundreds of organizations\u2019 cloud tenants since a surge in login attempts was observed in December 2024, leading to successful account takeovers.<\/p>\n<p>\u201cAttackers leverage Microsoft Teams API and Amazon Web Services (AWS) servers located in various geographical regions to launch user-enumeration and password-spraying attempts,\u201d the enterprise security company <a href=\"https:\/\/www.proofpoint.com\/us\/blog\/threat-insight\/attackers-unleash-teamfiltration-account-takeover-campaign\" rel=\"noopener\" target=\"_blank\">said<\/a>. \u201cAttackers exploited access to specific resources and native applications, such as Microsoft Teams, OneDrive, Outlook, and others.\u201d<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Cybersecurity researchers have uncovered a new account takeover (ATO) campaign that leverages an open-source penetration testing framework called TeamFiltration to breach Microsoft Entra ID (formerly Azure Active Directory) user accounts. The activity, codenamed UNK_SneakyStrike by Proofpoint, has targeted over 80,000 user accounts across hundreds of organizations\u2019 cloud tenants since a surge in login attempts was [\u2026]<\/p>\n","protected":false},"author":427,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[34],"tags":[],"class_list":["post-215780","post","type-post","status-publish","format-standard","hentry","category-cybercrime-malcode"],"_links":{"self":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/215780","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/users\/427"}],"replies":[{"embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/comments?post=215780"}],"version-history":[{"count":0,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/215780\/revisions"}],"wp:attachment":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/media?parent=215780"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/categories?post=215780"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/tags?post=215780"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}