A host-based intrusion detection system (HIDS) sensor that monitors system logs for evidence of malicious or suspicious application activity running in real time and monitors key system files for evidence of tampering. This system detects attacks targeted at the host system on which it is installed and...http://www.google.com.au/patents/US20040049693?utm_source=gb-gplus-sharePatent US20040049693 - Modular system for detecting, filtering and providing notice about attack events associated with network security