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.
Attenuation is the process of water retention on site and slowly releasing it in a controlled discharge to a surface water or combined drain or watercourse. The amount of discharge will vary depending whether it is a brown or greenfield site.