Cisco Certified Support Technician (CCST) CybersecuritySecurity PrinciplesEasy
A company is implementing a new digital signature system for all internal documents to ensure that the sender of a document cannot later deny having sent it. Which security principle is being primarily addressed by this implementation?
- ANon-repudiation
- BConfidentiality
- CIntegrity
- DAvailability
Show answer & explanationAnswer & explanation
Correct answer: A. Non-repudiation
Non-repudiation ensures that a party cannot successfully deny the validity of a message or action. Digital signatures provide proof of origin, directly addressing the goal of preventing a sender from denying their action.
Why the other options are wrong
- B. Confidentiality prevents unauthorized disclosure of information.
- C. Integrity ensures data has not been altered.
- D. Availability ensures access to resources when needed.
Non-repudiation
The assurance that someone cannot deny something. In cybersecurity, it ensures that the sender cannot deny having sent a message, and the recipient cannot deny having received it.
- Often implemented using digital signatures.
- Provides proof of origin and integrity.
- Crucial for legal and contractual agreements.
Memory trick: Security: Can I Trust All Actions?