What is the primary function of intrusion detection systems (IDS)?

The primary function of intrusion detection systems (IDS) is to monitor network traffic for suspicious activity and potential threats. IDS are designed to analyze the traffic going through a network and identify patterns or behaviors that may indicate a security incident, such as unauthorized access attempts, malware infections, or other malicious activities. By effectively monitoring and analyzing this network data, IDS can provide alerts to system administrators, allowing for timely responses to potential security breaches.

This capability is crucial for maintaining the integrity and security of networked systems and data, as it enables organizations to detect and address threats before they can cause significant harm. Unlike systems that block unauthorized access, an IDS does not actively prevent attacks; instead, it acts as a surveillance tool to ensure that any abnormal activity is flagged for further investigation and response.