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Illustration of an adversary-in-the-middle phishing relay capturing a Microsoft 365 browser session after MFA.

CybersecurityVERIFIED AUG 2026

Mirage2FA shows how attackers can steal Microsoft 365 sessions after MFA

ANALYSISPublished 24/08/20268 min read

Mirage2FA phishing infrastructure shows how criminals can relay a genuine Microsoft 365 sign-in, capture the resulting session and retain access after MFA. Defending against it requires phishing-resistant authentication and stronger session controls.