The FBI has issued an urgent warning about a growing cyber threat targeting users of Microsoft 365 services, including Teams, Outlook, and OneDrive, through a phishing platform known as Kali365.
According to the agency, Kali365 operates as a “Phishing-as-a-Service” platform that allows cybercriminals with limited technical expertise to launch sophisticated attacks against Microsoft account holders.
The service is reportedly available through a subscription model, making advanced phishing tools more accessible to a broader range of threat actors.
The emails contain instructions and device codes that, if entered by the recipient, can grant unauthorized access to their accounts and bypass certain authentication protections.
Federal investigators warn that the platform incorporates artificial intelligence tools to generate convincing phishing messages, automate campaigns, and track targets in real time.
These capabilities increase the likelihood that fraudulent communications will appear legitimate and successfully deceive users.
Users are encouraged to avoid clicking unfamiliar links, carefully verify requests for authentication credentials, monitor account activity for unauthorized access, and promptly report suspicious emails or login attempts.
Microsoft has also urged customers to follow federal guidance and noted that its security teams continue efforts to disrupt phishing operations and protect users from evolving cyber threats.
Related Tweet:
FBI issues urgent Kali365 security warning for Teams, Outlook, OneDrive usershttps://t.co/J22HOHtP4C
— The Hill (@thehill) June 15, 2026
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TIPP Staff
