If you were setting up an IDS with the desire to detect exploits for unknown or unreleased vulnerabilities which type of IDS would you use?

Using anomaly detection in an Intrusion Detection System (IDS) is the most suitable choice for detecting exploits for unknown or unreleased vulnerabilities. Anomaly detection works by establishing a baseline of normal behavior for network traffic or system operations and then monitoring for deviations from this baseline. Since unknown vulnerabilities do not have predefined signatures that signature-based detection relies upon, anomaly detection is equipped to identify unusual patterns that may indicate an attack, even if that attack targets an undisclosed vulnerability.

Anomaly detection methods can effectively recognize new and evolving threats by highlighting activities that diverge from the expected norm, thus enabling organizations to respond to potential security breaches in real time. This proactive approach is crucial, especially in environments susceptible to zero-day exploits where attackers exploit newly discovered vulnerabilities before patches are available.

In contrast, other types of IDS such as signature-based detection primarily identify threats through known signatures, making them ineffective for detecting unknown vulnerabilities. Network behavior analysis is a broader category that can include elements of anomaly detection, but it's generally more focused on identifying unusual patterns in network traffic rather than directly addressing unknown vulnerabilities. Host-based intrusion detection systems monitor individual hosts and can be useful, but they are not inherently designed for detecting new exploits targeting unknown vulnerabilities across the network level. Therefore, anomaly detection is the