Breach Finder

Check whether an email address or credential has appeared in a known data breach. Built to be quick enough for everyday work, and careful enough to trust with real documents.

• ✓One focused job, done properly — no clutter, no unrelated steps.
• ✓Works directly in your browser at breachfinder.nashrahshireen.com — nothing to install.
• ✓Your files are processed confidentially and are not shared or retained beyond the task.