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NIST SP 800-63B rate limiting and throttling

Documents failed authentication attempt rate limiting, disabled authenticators after excessive failures, delay before retry, risk-based controls, bot detection, successful-authentication retry reset, password-manager and paste support, and user feedback on remaining attempts or wait time.

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What this source can teach

Use this source to check a technical or accessibility requirement against its exact wording and scope.

  1. Start with the original. Open the source and find the guidance or example relevant to your task.
  2. Trace the connection. Use the claim notes below to see how this site applies the source to specific patterns.
  3. Check the setting. Compare the source's platform, people, and constraints with your own decision.

Pattern Decisions This Source Supports

Pattern Supported decision Required contract Claim note
Login Choose login when the user has submitted credentials or an authenticator and the UI must show the result, next retry, lockout, or session-created state. Submitting credentials enters one clear verifying state and prevents duplicate submissions until the login result returns. NIST supports rate limiting, retry delay, bot detection, authenticator disabling, successful-login reset, and user feedback on wait time.

Evidence Role

This source is treated as spec evidence. Its value comes from the specific claims and setting described above.

Publisher: National Institute of Standards and Technology. Last checked: .

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