C3PAO – CMMC Third-Party Assessment Organization

C – Confidential

CA – Certification Authority

CAS - Consolidated Adjudication Services

CFR – U.S. Code of Federal Regulations

CSA - Cognizant Security Agency

CSO - Cognizant Security Office

CERT – Computer Emergency Response Team

CFR – Code of Federal Regulations

CIO – Chief Information Officer

CIRT – Computer Incident Response Team; Cyber Incident Response Team

CISO – Chief Information Security Officer

CM – Configuration Management

CMMC – Cybersecurity Maturity Model Certification

CNSI - Classified National Security Information

CNWDI – Critical Nuclear Weapon Design Information

COMSEC – Communication Security

CPI – Critical Program Information

CTI – Controlled Technical Information

CUI – Controlled Unclassified Information