So today I saw (what was thought to be) a major malware incident. In rapid succession, 3 apparent Emotet (banking trojan malware) infection attempts.
Except they weren’t. Per the article below, Microsoft admitted to releasing a Microsoft Defender (the built-in antivirus in Windows 10 and the like) virus definition update that caused machines worldwide to falsely detect mundane actions as being the work of malware, denying legitimate activity, and generally causing panic.
I’ve still not seen any official word from Microsoft on which virus definition file version addresses the issue. I’ve seen a new definition release (v.1.353.1888.0) that’s numbered above the reportedly bad update, so hopefully that’s it.
Ref: