What does the CIA triad stand for?

• A. Confidentiality, Integrity, Availability
• B. Compliance, Isolation, Accessibility
• C. Cybersecurity, Identity, Access
• D. Control, Integrity, Availability

Answer: (A)

The CIA triad represents the three core objectives of information security: confidentiality, integrity, and availability. Confidentiality means that data is accessible only to those who are authorized to see it, protected by measures like strong authentication and encryption. Integrity ensures that information remains accurate and untampered, with protections such as checksums, digital signatures, and strict change controls. Availability guarantees that information and systems are accessible to authorized users whenever needed, supported by reliable infrastructure, backups, and redundancy.

This model helps security professionals balance protection, trust, and accessibility. For example, encrypting a file protects confidentiality, while validating a file’s integrity prevents hidden tampering, and keeping systems up and running ensures availability. The common alternative phrasings replace one of the terms with a different concept (such as Compliance, Isolation, Accessibility or Cybersecurity, Identity, Access), which shifts emphasis away from the established trio, so the standard answer remains Confidentiality, Integrity, Availability.