Understanding EDR
Endpoint Detection and Response (EDR) represents the evolution of endpoint security beyond traditional antivirus. While antivirus relies primarily on signature-based detection to block known malware, EDR continuously records endpoint activity, uses behavioral analysis and machine learning to detect suspicious patterns, and provides the tools to investigate and respond to threats in real time.
EDR agents are deployed on endpoints including laptops, desktops, and servers. They record a continuous stream of endpoint telemetry including process execution, file modifications, network connections, registry changes, and user activities. This data is analyzed in real time to detect threats and is retained for forensic investigation.
EDR has become a baseline security control that compliance frameworks expect to see. It is particularly critical for detecting fileless malware, living-off-the-land attacks, and advanced persistent threats that traditional antivirus cannot identify.
Key Capabilities
EDR vs Traditional Antivirus
Detection method
Traditional AV
Signature-based matching against known malware databases
EDR
Behavioral analysis, machine learning, and threat intelligence
Visibility
Traditional AV
Limited to file scan results and basic alerts
EDR
Full endpoint telemetry with process trees, network connections, and file changes
Response
Traditional AV
Block or quarantine known malware files
EDR
Isolate endpoints, kill processes, roll back changes, collect forensic data
Investigation
Traditional AV
Minimal forensic capability
EDR
Full timeline-based investigation with threat hunting