Glossary: Monitoring Tools and the Identity Life Cycle
NIST SP 800-63A-4
Also written: 800-63A-4, Digital Identity Guidelines
The US standard for identity proofing, finalized in July 2025. It defines the resolution, validation and verification steps and the three IALs.
Where the book teaches it
Related terms
Identity proofingIAL (identity assurance level)NIST (National Institute of Standards and Technology)