What is the primary function of Intrusion Detection Systems (IDS) in cybersecurity?

The primary function of Intrusion Detection Systems (IDS) in cybersecurity is to monitor network traffic for suspicious activity. IDS are designed to detect unauthorized access attempts or anomalies within a network, helping organizations identify potential security breaches or malicious acts in real-time. By continuously analyzing network traffic and system activities, IDS can effectively recognize patterns that may indicate a security threat, such as unusual login attempts, excessive use of resources, or known attack signatures.

This monitoring capability allows security teams to respond quickly to incidents, helping to mitigate damage and improve overall security posture. In contrast, the other functions listed do not represent the primary role of an IDS: encrypting data during transmission pertains to data confidentiality, providing physical security involves protecting the physical infrastructure of data centers, and conducting security audits focuses on assessing security policies and practices rather than real-time monitoring. Thus, the distinct purpose of an IDS is centered on the active detection of threats through traffic surveillance.