FBI Warns of Kali365 PhaaS Platform Attacking Microsoft 365 Users to Steal Logins and Bypass MFA

Cybersecuritynews •Abinaya • May 22, 2026

The FBI has issued a new cybersecurity warning a rapidly emerging phishing-as-a-service (PhaaS) platform named Kali365, which is actively targeting Microsoft 365 users to steal access tokens and bypass multi-factor authentication (MFA). Kali365 is being distributed primarily through Telegram channels, where threat actors can to the service and launch phishing campaigns with minimal […]

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FBI Warns of Kali365 Phishing Kit Targeting Microsoft 365 Users The FBI has issued a warning regarding the Kali365 phishing kit, which is actively stealing Microsoft OAuth tokens and bypassing multi-factor authentication (MFA) protocols. First identified in April 2026, Kali365 is marketed as a Phishing-as-a-Service (PhaaS) platform on Telegram, enabling less-technical attackers to execute phishing campaigns. The attack method involves sending emails that impersonate trusted cloud services, instructing victims to enter a device code on a legitimate Microsoft page, thereby granting attackers access to their accounts without needing credentials. This poses significant risks to organizations, including potential data theft and corporate espionage. The FBI has recommended creating conditional access policies and blocking authentication transfer policies to mitigate the threat. The rise of Kali365 adds to the growing concerns over phishing attacks, which 77% of organizations believe have increased in the past year. 135 sources 73

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FBI Warns of Kali365 PhaaS Platform Attacking Microsoft 365 Users to Steal Logins and Bypass MFA

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MITRE ATT&CK (1)

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