leaksear.ch is a data breach search engine built for individuals and security professionals. We index publicly known breach datasets and make them searchable so you can quickly find out if your data has been compromised.
Why leaksear.ch
Security professionals and privacy-conscious individuals trust our search engine to surface exposures faster than anyone else.
OpenSearch-powered engine searches billions of records in milliseconds. Results before you blink.
We never log your search queries beyond your own history. Your threat intel stays private.
Hundreds of indexed breach datasets spanning over a decade of publicly known data exposures.
New breaches are indexed as they surface. Our database never stops growing.
Full REST API with MCP integration. Build breach checks into your security workflows.
Search by email, username, phone, IP, password hash, domain, and more across every dataset.
Have questions, feedback, or need help? Reach out at [email protected].