VeridentiDocs
ChangelogFor BusinessContact
Docs End-user guide Check for breached passwords

Check for breached passwords

Veridenti can tell you if any of your saved passwords have appeared in a known data breach — so you can change the ones that put you most at risk.

How it works (and why it stays private)

When you turn it on, Veridenti checks each password against a database of billions of leaked ones using k-anonymity: your password is hashed on your device, and only the first five characters of that hash are ever sent. That's enough to fetch a list of possible matches, which are then compared on your device. Your actual password — and its full fingerprint — never leave your computer.

NoteThis check is off by default. It's the one feature that makes a network request, so it stays opt-in to keep Veridenti's "no phone-home by default" promise. The lookup is routed through Veridenti's own privacy proxy, so the breach service never even sees your IP address.

Turn it on

  1. Open Veridenti and find your Protection Score on the home screen.
  2. Under the score, choose Turn on breach-password check.
  3. Veridenti scans your vault and shows how many of your passwords were found in a breach.

Fixing a breached password

A password found in a breach is live danger — change it everywhere you use it. Tap Fix it on the finding and Veridenti drives the change for you: it generates a strong new password, opens the site's change-password page, and fills the current, new, and confirm boxes. Then it shows a review-and-submit banner — you check it over and press the button yourself.

NoteVeridenti never submits a password change for you, and it only saves the new password after confirming the change actually worked. If the change fails, it keeps your old password so you can still sign in; if the result is unclear, it asks you which to keep. A password change can't lock you out of your account.
NoteSeeing which of your passwords are breached is free forever — the honest diagnosis is the point. The guided one-click fix is part of Plus.

"Breached password" vs "breached site"

Last updated August 26, 2026 · Docs v1.3
Enter to open · Esc to close
Veridenti