leak-check

A personal information leak detection tool that checks whether your email, phone, or other personal data has been exposed in known data breaches. An open source alternative to HaveIBeenPwned that you can run yourself.

The interface is in Chinese, built for the Chinese developer community. It queries breach databases to find matches against your personal identifiers and reports what was exposed and when.

The catch: the breach databases it checks may not cover all sources. HaveIBeenPwned has broader coverage of international breaches. Running your own leak checker means you trust the data sources it queries, and those sources vary in reliability. If you just need a quick check, HaveIBeenPwned is more comprehensive. This tool is better if you want to run checks programmatically or self-host the capability.