Security researcher who posted Windows zero-day vulnerability claims he was “banned from GitHub in retaliation by Microsoft”

Security researcher Nightmare-Eclipse says his GitHub account was suspended after publishing Windows zero-day flaws, and he calls it retaliation by Microsoft.

He also says his GitLab account was later banned after moving there, while Microsoft argues he did not share enough information before disclosure.

The dispute highlights tensions around zero-day disclosure, bug bounties, and whether platform suspensions are an appropriate response.

The case may affect trust in coordinated disclosure, researcher protections, and how companies handle public vulnerability reports.