Host-based intrusion detection system

A host-based intrusion detection system (HIDS) is an intrusion detection system that is capable of monitoring and analyzing the internals of a computing system as well as the network packets on its network interfaces, similar to the way a network-based intrusion detection system (NIDS) operates. HIDS focuses on more granular and internal attacks through focusing monitoring host activities instead of overall network traffic.

Source: Wikipedia — Host-based intrusion detection system (CC BY-SA 4.0)