webserial is being reported as dangerous by Windows Security...

[wanderling]

Why write about it now?
Because Windows decided not to inform me of this quarantine.

[kuba2k2]

Unfortunately, there is not much I can do to fix it. One possible option would be to remove the .exe file from the addon bundle, but that would require downloading it from GitHub instead.

[reg98643t]

Pretty dire score on virustotal.com too

[kuba2k2]

You are free to:

• inspect the source code on GitHub and how the binaries are built,
• compile the program yourself,
• or avoid using the addon if you're worried about it being dangerous.

This program needs to access low-level hardware (COM ports), it is downloaded by a web browser, and is not very popular. All of that makes AV software detect it as a false positive.

Besides, notice that the detections say "downloader" which is exactly what it does. It's not a malicious thing to do. Also notice that 11/72 isn't a critical score, and all of the well known AV software brands have not detected the file.