What is an "intrusion detection system" (IDS)?

An intrusion detection system (IDS) is designed specifically to monitor network or system activities for malicious activities or policy violations. This system analyzes patterns and behaviors in real time to detect potential threats, such as unauthorized access attempts, malware activities, or anomalies that indicate a security breach. By identifying and alerting administrators to these potential intrusions, the IDS serves a critical role in cybersecurity, allowing for timely responses to threats and helping to protect sensitive information and systems.

The function of an IDS is distinct from those of data storage solutions, software development tools, or general virus protection mechanisms. While data storage systems are focused on managing and storing data, and antivirus software aims to prevent and mitigate the effects of malware, an IDS specifically targets the detection and logging of suspicious activities. This specialized functionality underscores the importance of IDS in an organization's overall security posture, complementing other security measures to create a robust defense against cyber threats.