IDS systems can be classified in many different ways. Which of the following is not a way that IDS systems are commonly classified?

The term 'latent' is not a standard classification for IDS systems. It does not correspond to any recognized taxonomy used in intrusion detection. The four established classification types are based on detection location (network-based vs. host-based) and response behavior (passive vs. active), making 'latent' the answer that does not belong.

Network-based IDS (NIDS) is a standard classification referring to systems that monitor network traffic across segments.

Passive IDS is a standard classification describing systems that detect and alert without taking automated action.

Active IDS is a standard classification describing systems that both detect intrusions and respond automatically, such as by blocking traffic.

Host-based IDS (HIDS) is a standard classification referring to systems that monitor activity on individual host machines.