For some users on Windows, the Defender has the infamous false-positive ransomware detection problem. We are aware of that issue and we have come to know that this often happens with the apps that are using Electron like us. On some computers, Spotify is also detected falsely as a virus by Windows Defender.
We have already submitted a request to Microsoft Security Intelligence so they fix this issue with the defender asap. Furthermore, we have also tested the Stack Installer file for 69 different viruses, and here is the report.

So, it is 100% false positive detection from the defender and there is no virus in Stack installer. And hopefully, it will get resolved soon.

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