How to use Data Breach Checker
Enter the value, text, file or public URL requested by the interface, run Data Breach Checker, then review each finding before acting on it.
What the tool does
Check whether a password appears in the Pwned Passwords corpus using the k-anonymity range service without sending the full password or full hash.
Supported inputs
Password.
Actual output
A diagnostic result showing the checks performed and the findings that need review.
Privacy and processing
Avoid entering live secrets unless the page explicitly confirms an appropriate local workflow.
Limitations
Security and legal results are informational or template-based. Protect secrets, keep backups and obtain professional advice where appropriate.
Common mistakes
Check password, keep units and formats consistent, and review the result before using it in another calculation or workflow.
Frequently asked questions
What can I use Data Breach Checker for?
Check whether a password appears in the Pwned Passwords corpus using the k-anonymity range service without sending the full password or full hash.
What input does Data Breach Checker accept?
Password.
What should I check after using Data Breach Checker?
Security and legal results are informational or template-based. Protect secrets, keep backups and obtain professional advice where appropriate.
Related tasks and guides
- Passphrase Generator — Generate passphrase using words and separator.
- Password Strength Checker — Check a password locally for length and character variety and review the resulting strength guidance.
- Suspicious URL and Phishing Checker — Inspect a URL locally for heuristic warning signals such as insecure HTTP, IP-hosted links, excessive subdomains, punycode and risky account wording.
- Encrypted Secure Notes Tool — Process secure note using private note, encryption password, and action.