Which type of security tool is known for analyzing network traffic and highlighting anomalies?

An Intrusion Detection System (IDS) is specifically designed to monitor network traffic and identify suspicious or anomalous activities that may indicate a security threat. It analyzes data packets traveling through the network, comparing them against known patterns of normal behavior and potential threats. When it detects an anomaly, such as unusual patterns or behaviors that deviate from the established baseline, it can alert administrators or take action to mitigate potential incidents.

This capability is crucial for maintaining the security of a network, as it allows for early detection of intrusion attempts, unauthorized access, and other malicious activities, enabling prompt incident response.

In contrast, a firewall acts as a barrier that controls incoming and outgoing network traffic based on predetermined security rules, while antivirus software primarily focuses on detecting and removing malware on devices. Security Information and Event Management (SIEM) systems gather and analyze security data from various sources across an organization but are not solely focused on real-time traffic analysis like an IDS. Therefore, the Intrusion Detection System is the tool best suited for traffic analysis and anomaly detection.