– The check happens only at install time. A verified installer could later be replaced by a malicious update bypassing WinGet.
: Beyond automated checks, moderators manually review pull requests (PRs). They often test installers in separate environments to verify the metadata is accurate and the package isn't malicious. microsoft winget client verified
When you install a package using WinGet, the client doesn't just download a file; it relies on a multi-stage verification pipeline hosted by Microsoft. – The check happens only at install time
In a standard software download, a malicious actor could compromise a download server and replace a legitimate installer with a malicious one. If WinGet were simply downloading a file from a URL without verification, it could inadvertently distribute malware. They often test installers in separate environments to
Packages are continuously re-scanned. If a previously safe URL becomes compromised, Microsoft can deprecate or pull the manifest immediately, protecting downstream clients. Conclusion
Avoid using --ignore-security-hash in production scripts. A failed hash indicates a corrupted download or a compromised file.