An intrusion detection system (IDS) inspects all inbound and outbound network activity and identifies suspicious patterns that may indicate a network or system attack from someone attempting to break into or compromise a system. There are several ways to categorize an IDS:
Civil inattention. Civil inattention is the process whereby strangers who are in close proximity demonstrate that they are aware of one another, without imposing on each other â a recognition of the claims of others to a public space, and of their own personal boundaries.
Sights unseen. Research on a phenomenon known as inattentional blindness suggests that unless we pay close attention, we can miss even the most conspicuous events. Picture this: a teen-ager, cruising down a familiar highway, keeping a conscientious eye on the speedometer, the rear view mirror, the oncoming traffic. Too late, he notices a deer standing in the road. He slams on the brakes but can't avoid striking the animal.