Which of the following is NOT a type of active attack?

Active attacks are types of security threats where an attacker attempts to alter system resources or affect their operation. These can be characterized by the attacker’s direct engagement in tampering with the communication or the data being processed.

Replay attacks involve the attacker capturing and retransmitting data packets to create unauthorized actions. Masquerade attacks occur when an attacker disguises themselves as a legitimate user to gain access to systems. Denial-of-service (DoS) attacks disrupt the normal functioning of a service, making it unavailable to intended users.

Interception, on the other hand, primarily refers to passive attacks where the main goal is to simply monitor or acquire data in transit without altering it. This makes interception fundamentally different from the other options listed, which involve active interference with the operation of the network or data. Thus, the correct answer identifies interception as not being a type of active attack.