Anomaly Detection: A technique used in security to identify unusual patterns or behaviors that may indicate a potential threat. This could involve statistical methods, machine learning algorithms, or other techniques to establish a ‘normal’ baseline and then identify deviations from this baseline. Anomaly detection can be used in many areas of security, from network monitoring to fraud detection to user behavior analytics. It’s an essential component of many intrusion detection or protection systems (IDS/IPS) and security information and event management (SIEM) solutions.