FBI Warns Microsoft Users—New Attack Gains Access To Accounts

FBI Warns Microsoft Users—New Attack Gains Access To Accounts

By Zak Doffman
Publication Date: 2026-05-25 06:30:00

The FBI issued a warning on May 21, as a new AI-powered attack enables “threat actors to obtain Microsoft 365 access tokens and bypass multi-factor authentication (MFA) protocols without intercepting the user’s credentials.”

Dubbed Kali365, this phishing-as-a-service threat was first discovered last month. The FBI released its public service announcement “to warn the public” that these attacks use Microsoft’s authentication infrastructure to steal user credentials.

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The new phishing-as-a-service platform is distributed via every hacker’s favorite messenger — Telegram. But the attack will come at you via email. “Kali365 lowers the barrier of entry,” the bureau says, “providing less-technical attackers access to AI-generated phishing lures, automated campaign templates, real-time targeted individual/entity tracking dashboards, and…