Hackers compromised Microsoft 365 accounts at 79 organizations by reusing stolen login tokens, recording at least 497 successful sign-ins between July 14 and September 22, 2026. The ten-week campaign also generated more than 200,000 failed login attempts across monitored customer environments. The attackers targeted authenticated sessions rather than relying on password guessing. Similar to previously […]
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Hackers Hijack Microsoft 365 Accounts at 79 Organizations Using Stolen Login Tokens