Check addresses you own. That's what this tool is for.

What this check can and can't tell you

A match means your address appeared in a specific known breach — the result names the company, the date, and what kinds of data leaked. An all-clear means you're not in any known, published breach, which is good news but not a guarantee; breaches can go undiscovered for years. Either way, the fixes that matter are the same three, and the checklist below your results walks through them. For the full picture, read our guide: Was your email in a data breach?