Historical estimate

Guess “123456”

Probability:
0.892%
Odds:
1 to 111
dBan
−20.5 dBan

In the RockYou 2009 corpus, “123456” appears 290,729 times among 32,603,388 password occurrences.

Calculation

p = 290,729 / 32,603,388

Assumptions

One password occurrence is sampled uniformly from the 32,603,388 occurrences in the pinned RockYou 2009 frequency archive. The guess must match the string exactly. This historical, service-specific corpus does not represent every present-day password. Online protections and two-step verification also affect account security.

Security advice

If you use this password, replace it with a unique password generated by a password manager. Avoid familiar patterns such as keyboard runs, names, and birthdays. Use a passkey when available, and enable two-step verification where passwords remain.

Sources

  1. SecLists: RockYou passwords with frequencies RockYou 2009 corpus: 32,603,388 password occurrences across 14,344,391 frequency rows
  2. NIST SP 800-63B: passwords and authentication
  3. NCSC: passkeys are the future published 23 April 2026