Arelle 2.39.3 Falgged as virus
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Simple Gmp
Mar 24, 2026, 1:57:34 PM (11 days ago) Mar 24
to Arelle-users
Hello,
Trying to install Arelle Release 2.39.3 on a 64-bit Windows 11 machine, but it's being flagged as wacatac.B!ml virus, then quarantined by Windows Security.
Has anyone experienced this and is it a threat or could it be a false positive?
Has anyone experienced this and is it a threat or could it be a false positive?
Austin Matherne
Mar 25, 2026, 3:16:05 PM (10 days ago) Mar 25
to Arelle-users
Hi,
Windows Defender's `!ml` detections are machine learning based heuristics, not signature matches, and they commonly trigger on legitimate software, especially new releases with low install counts.
Arelle's entire codebase and the build workflows that produce the exe are open-source and publicly auditable at https://github.com/Arelle/Arelle. It's also possible to run Arelle from source without using the exe that's provided for convenience.
Windows Defender's `!ml` detections are machine learning based heuristics, not signature matches, and they commonly trigger on legitimate software, especially new releases with low install counts.
Arelle's entire codebase and the build workflows that produce the exe are open-source and publicly auditable at https://github.com/Arelle/Arelle. It's also possible to run Arelle from source without using the exe that's provided for convenience.
Kind regards,
Austin Matherne
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