| Abbreviation | Definition |
|---|---|
| CRR | Cyber Resilience Review |
| CRS | Certificate Retrieval System |
| CRV | Connectivity, Reliability, and Value |
| CS | Coding Scheme |
| CSA | Cisco Security Agent |
| CSAC | Computer Security Advisory Committee |
| CSAC | Cross Signature Assurance Criterion |
| CSAD | Computer Security Awareness Day |
| CSC | Card Security Code |
| CSCI | Computer Systems Center Incorporated |
| CSDII | Cross-Sector Digital Identity Initiative |
| CSIRC | Computer Security Incident Response Capability |
| CSIRT | Computer Security Incident Response Team |
| CSM | Cryptographic Services Module |
| CSP | Certificate Service Provider |
| CSPRNG | Cryptographically Secure Psuedo Random Number Generator |
| CSRF | Cross-Site Request Forgery |
| CSS | Client Security Software |
| CSVC | Computer System Validation Compliance |
| CSVN | Consistent SubVersioN |