Why include multiple detection methods in an IDS?

Incorporating multiple detection methods in an Intrusion Detection System (IDS) is essential to enhance detection accuracy against diverse threats. Different types of intrusions and attacks can manifest in various ways, and thus may be better identified by specific detection techniques. For example, signature-based detection is effective for known threats, while anomaly-based detection can identify unusual patterns that might indicate new or evolving threats. By combining these methods, an IDS can cover a broader range of attack vectors and adapt more effectively to the changing landscape of cyber threats.

This multifaceted approach ensures that the system is not overly reliant on any single method, which may have limitations in detecting certain types of attacks. Consequently, the integration of multiple detection techniques significantly improves the system's ability to accurately identify genuine threats while minimizing the risk of attack misclassification, ultimately leading to more robust security measures.