Unfortunately Defender also flags lots of non-malware open source software, which trains users to ignore it.
Example? Personally I have not run into a single such false positive for the past 10 years. Microsoft SmartScreen sometimes shows a warning for executables that are not digitally signed, but that's not Defender, and this is nowhere like flagging as a virus.
Re:Xubuntu.org Might Be Compromised
by akimbostrawman on Tuesday October 21, 2025 @04:58AM
(#45653840)
qBittorrent which is a reputable and popular torrent client used to download linux isos, gets flagged and removed as "potentially unwanted applications" by windows defender.
Of course, there are people who disable built-in security scanning and don't use another antivirus software, and that's on them.