Hackers Hijack Microsoft 365 Accounts at 79 Organizations Using Stolen Login Tokens

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 […] The post Hackers Hijack Microsoft 365 Accounts at 79 Organizations Using Stolen Login Tokens appeared first on Cyber Security News.

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