ZeroAuthority
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Password Leak Check

Checks whether a password has appeared in known data breaches without ever sending it. Only the first five characters of a SHA-1 hash leave your device (k-anonymity), so the service never learns the password.

Up to 25 lines. Checked on your device against the Have I Been Pwned range API.

Result

Fill in the form and press Check passwords. Or load an example to see what this tool returns.