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Free Leaked Password Check

Free Leaked Password Check

Hashed-only check across 600+ disclosed breach corpora. Your password never leaves your device in plaintext.

99%
Match accuracy
2
Sources

What is free leaked password check

If your password ever appeared in a public breach corpus, every credential-stuffing bot has it. Skopio checks the hashed password against 600+ disclosed corpora using k-anonymity (only the first 5 hash characters are sent). Plaintext never leaves your device. Free always.

Why it matters

Reused leaked passwords are the source of 80 percent of all account takeovers. One free check per password before reusing.

Who uses it and why

Real scenarios from different teams

Wonder if password I use is in a breach.

β†’ Hash check returns yes/no across all 600+ disclosed breaches.

Audit company password policies. Find which active passwords are breached.

β†’ Bulk hash check via API for company passwords against breach corpora.

Where the data comes from

Every source is legitimate and transparent. Each finding cites its origin.

1
HIBP password corpus
847M+ unique hashes from 600+ breaches.
breach
2
Disclosed plaintext corpora
Aggregated re-disclosure dumps.
breach

Sample reports

Real values masked. Structure and fields are exactly as in production.

[hashed locally]
k-anonymity check
  • βœ“Found in 12 breaches
  • βœ“Most recent: Twitter 2022
  • βœ“Strongly recommend rotation

Frequently asked questions

Is sending my password safe?+

We use k-anonymity. Only the first 5 hash characters are sent. The plaintext password and full hash never leave your device.

Free?+

Free, always β€” privacy-critical category we never charge for.

HIBP alternative?+

Yes, with a broader corpus.

Skopio compared to alternatives

Objective comparison for this category

Same k-anonymity, broader corpus.
Authoritative, narrower scope.

Ready to try?

First lookup every day is free. No card, no expiry.