What does signature-based detection involve?

Signature-based detection involves identifying known patterns of malicious activity. This method relies on a database of signatures, which are specific patterns or characteristics of previously identified threats, such as viruses or intrusions. When an intrusion detection system (IDS) uses signature-based detection, it scans network traffic or system activities looking for these pre-defined signatures.

This approach is effective because it can quickly and accurately detect known threats, allowing for immediate response to prevent or mitigate harm. However, it is important to note that its effectiveness is limited to previously identified threats, meaning it may not detect new or unknown vulnerabilities that do not yet have established signatures.

By focusing on established patterns of behavior associated with malicious activity, signature-based detection provides a robust framework for defending against threats that have already been documented in the cybersecurity community. This makes it a fundamental technique within the broader intrusion detection strategy.