What is the main function of an IDS?

The main function of an Intrusion Detection System (IDS) is to monitor and analyze network traffic for suspicious activities and potential security breaches. An IDS is crucial in cybersecurity as it helps organizations detect unauthorized access and other malicious activities that could compromise their systems and data. By identifying these threats in real-time, an IDS enables organizations to take swift action to mitigate risks and bolster their overall security posture.

In contrast, the other choices pertain to different functions or roles not related to intrusion detection. An Immigration Judge serves a judicial role in the immigration process, evaluating cases and making legal determinations. An Intelligence Fusion System is typically focused on integrating and analyzing data from various sources for intelligence purposes, which is distinct from monitoring network security. The Interim Fraud Tracking System aims at tracking fraudulent activities in specific contexts, not specifically related to network intrusions. These distinctions clarify why the Intrusion Detection System is the correct choice for addressing security monitoring and threat detection.