10 billion data breach records. Are you one of them?

LeakCheck does not collect or store your search history. For full anonymity, create a SHA256 hash of your lowercased email and search with the “email by hash” type — if anything comes up, the data was already compromised. The same works for the reverse password search.

It’s an email search that checks for a user or “keyword” inside the address. A search for “example” returns example@example.com and every other result starting with it. Add “@” to your query to match entries that contain only “example” explicitly.

This is a limitation of free accounts. An upgraded plan is required for full access to all compromised data.

It depends. To stay 99% secure, use different strong passwords for each site and enable 2FA wherever available. Use disposable email providers when you’re not sure about a website. With LeakCheck, you can also sign up to receive notifications when new data leaks are discovered.

We have one of the largest known databases with more than 10 billion exposed records. When hackers breach a website, the stolen data gets decrypted and published on various platforms and forums. We thoroughly search and monitor all such publications and add the findings to our common list.

Free services display only the source of the leak — we provide a full list of viewable compromised data. Besides email lookups we offer search by keyword, username, phone, hash and domain. We respond to new leaks immediately, and developers get an API with 3 requests/second.

Yes. Email-based leaks are removed via an automated request to removal@leakcheck.net, phone numbers — through our Telegram bot. See the Removal data section for the full guide.