What is network intrusion detection?

Network intrusion detection is a security practice used to monitor a network for malicious activity or policy violations. An intrusion detection system (IDS) typically collects and analyzes network traffic, system logs, and other data sources to identify potential intrusions or attacks. When suspicious activity is detected, the IDS can generate alerts, log events, or even take automated actions to block or mitigate the threat. It serves as a key component of network security, helping to protect against unauthorized access, data breaches, and other cyber threats.