Zero Trust is a security model that eliminates implicit trust based on network location. It assumes breach and verifies every access request regardless of where it originates.
CISSP Relevance
Zero Trust connects Domain 3 (Security Architecture), Domain 4 (Network Security), and Domain 5 (Identity and Access Management).
The definitive guide is NIST SP 800-207 Zero Trust Architecture.
Related terms: Defense in Depth, Multi-Factor Authentication