1. The ability to adapt to changing conditions and prepare for, withstand, and rapidly recover from disruption.

Source: Explore Terms: A Glossary of Common Cybersecurity Terminology, National Initiative for Cybersecurity Careers and Studies (NICCS),

2. The capacity to withstand and quickly recover from attacks that could compel, deter, restrain, or otherwise shape U.S. behavior.

Source: U.S. Cyberspace Solarium Commission, March 2020,