Which reliability aspect of information is compromised when a staff member denies having sent a message?

Which reliability aspect of information is compromised when a staff member denies having sent a message?
A . Confidentiality
B . Integrity
C . Availability
D . Correctness

Answer: B

Explanation:

The reliability aspect of information that is compromised when a staff member denies having sent a message is integrity. Integrity is the property of information that ensures its accuracy, completeness, consistency and authenticity. When a staff member denies having sent a message, it implies that the message was either altered, forged, deleted or repudiated by someone else, which violates the integrity of the information. ISO/IEC 27001:2022 defines integrity as “the property of accuracy and completeness” (see clause 3.24).

Reference: [CQI & IRCA Certified ISO/IEC 27001:2022 Lead Auditor Training Course], ISO/IEC 27001:2022 Information technology ― Security techniques ― Information security management systems ― Requirements, What is Integrity?