CERN IT Governance

Computer Security: ThisIsAVeryGoodPassword

Properties3
descriptionThe password policy change: NIST 800-63b alignment, 15-character minimum, breach checks.
urlhttps://home.cern/computer-security-thisisaverygoodpassword/
kindofficial-announcement

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Computer Security: ThisIsAVeryGoodPassword

The Computer Security team’s article on the password policy revision.

What it anchors

  • The Computing Rules were updated in line with NIST 800-63b: complexity requirements dropped, minimum length extended to 15 characters.
  • New passwords are checked against lists of simple and “burnt” (breach-exposed) passwords; non-compliant passwords across all account types must be changed in 2026.

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