Which of the following is the ability of users to deny that they performed specific actions or transactions?
-
Repudiation
-
Eavesdropping
-
Spoofing
-
Hijacking
To answer this question, the user needs to be familiar with the basic security concepts.
The ability of users to deny that they performed specific actions or transactions is known as repudiation. This can occur when a user denies that they have performed an action such as sending an email or making a purchase.
Therefore, the correct answer is: A. Repudiation
Repudiation is precisely the ability of a user to deny having performed an action or transaction, which is why systems implement non-repudiation controls (audit logs, digital signatures) to counter it. Eavesdropping is passively intercepting communications, unrelated to denying actions. Spoofing is impersonating another identity, not denying one's own actions. Hijacking is taking over an active session, also a different threat category from denial of responsibility.