Russian APT28 Deploys “NotDoor” Outlook Backdoor Against Companies in NATO Countries
- Posted on September 4, 2025
- By The Hacker News
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Russian APT28 Deploys “NotDoor” Outlook Backdoor Against Companies in NATO Countries

APT28 deploys NotDoor Outlook backdoor via OneDrive DLL side-loading, enabling email-based data theft in NATO firms.