Palo Alto Networks Certified Network Security Administrator (PCNSA)Cybersecurity FundamentalsMedium
A company is experiencing an increase in phishing attempts where attackers are impersonating senior executives to trick employees into revealing sensitive information or transferring funds. Which cybersecurity concept specifically addresses the trustworthiness of the sender in electronic communications to mitigate this type of attack?
- AAvailability
- BConfidentiality
- CIntegrity
- DNon-repudiation
Show answer & explanationAnswer & explanation
Correct answer: D. Non-repudiation
Non-repudiation ensures that the sender of a message or the executor of an action cannot falsely deny having sent the message or performed the action. In the context of phishing, this concept relates to verifying the authenticity of the sender to prevent impersonation.
Why the other options are wrong
- A. Availability ensures access to resources, not the sender's identity.
- B. Confidentiality protects information from unauthorized access, not the sender's identity.
- C. Integrity ensures information has not been altered, not the sender's identity.
Non-repudiation
A security service that provides undeniable proof of the origin of a message or the integrity of data, preventing a sender from falsely denying having sent a message or an action.
- Ensures accountability for actions and communications.
- Often achieved through digital signatures and trusted timestamps.
- Crucial for legal and contractual agreements.
- Helps combat impersonation and phishing by verifying sender authenticity.
Memory trick: Don't deny, prove it's from you!