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Microsoft 365 logins stolen via ADFS redirects in phishing campaign

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1 unique sources, 1 articles

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A phishing campaign has been observed using legitimate ADFS redirects to steal Microsoft 365 logins. The attackers exploit trusted Microsoft infrastructure to bypass URL-based detection and multi-factor authentication, redirecting users from legitimate office.com links to phishing pages. The campaign targeted multiple organizations, starting with malicious sponsored links in Google search results. The attackers set up a custom Microsoft tenant with ADFS configured, allowing them to receive authorization requests and authenticate users on the phishing page. The phishing site was disguised with fake blog posts and conditional loading restrictions to evade detection and ensure only valid targets accessed the phishing page.

Timeline

  1. 20.08.2025 18:33 1 articles · 1mo ago

    Phishing campaign uses ADFS redirects to steal Microsoft 365 logins

    A phishing campaign has been observed using legitimate ADFS redirects to steal Microsoft 365 logins. The attackers exploit trusted Microsoft infrastructure to bypass URL-based detection and multi-factor authentication. The campaign starts with malicious sponsored links in Google search results, redirecting users from legitimate office.com links to phishing pages. The attackers set up a custom Microsoft tenant with ADFS configured, allowing them to receive authorization requests and authenticate users on the phishing page. The phishing site is disguised with fake blog posts and conditional loading restrictions to evade detection.

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