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Mirage2FA Phishing Kit Bypasses MFA to Hijack Microsoft 365 Sessions, Targeting 3,500+ Organizations
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A phishing-as-a-service toolkit called Mirage2FA, linked to the group LinX Coders, has potentially compromised 4,532 Microsoft 365 accounts across 3,518 organizations in 94 countries, with 63.7% of victims in the US. The kit uses HTML, XHTML, and SVG attachments to deploy adversary-in-the-middle proxies that capture authenticated session cookies, bypassing MFA without dropping malware. Over half of 9,332 recorded compromise events involved cookie theft, making simple password resets insufficient for remediation.