Do Son APT28 (Fancy Bear) weaponized CVE-2026-21509 in 24 hours to target NATO. New "BeardShell" and "NotDoor" malware steals emails. Patch Office now.
NotDoor
A new report reveals NotDoor, a backdoor by Russia's APT28 that hides in Microsoft Outlook macros and uses specific email triggers to exfiltrate data and execute commands.