GitHub bans Outlook and Hotmail emails for new signups amid organized abuse
lipeng0820 · x · 2026-09-28
GitHub has quietly blocked new signups using Outlook and Hotmail addresses after sustained, organized fraud and abuse via those domains; existing accounts are unaffected.
- Abuse rings favored the high-reputation Microsoft domains because platforms rarely block them; at peak, tens of thousands of accounts were created per day
- GitHub says it paused the domains while it evaluates how to balance secure access with abuse prevention; no timeline for restoration
- The move is notable given both email services are Microsoft-owned, like GitHub itself
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