NIST Password Guidelines: What SP 800-63B Actually Says
The key recommendations from NIST SP 800-63B: minimum length, no complexity rules, breach checking, and deprecating hints.
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Tags: security, passwords, standards
NIST Password Guidelines: What SP 800-63B Actually Recommends If you've ever wondered why modern security advice seems to contradict the IT policies you've been following for years, NIST SP 800-63B is the reason. Published in 2017 and updated through 2024, this document reversed decades of conventional wisdom on password security — and backed every reversal with actual research on how passwords get cracked and how users respond to requirements. This guide summarizes what NIST actually recommends, why the guidance changed, and what it means for your password policies. What Is NIST SP 800-63B? NIST Special Publication 800-63B is the U.S. government's guidance on digital identity authentication. While it's technically directed at U.S. federal agencies, it's widely adopted as the industry…
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