What Is EDR?
EDR (Endpoint Detection and Response) is a security solution that continuously monitors suspicious activities on computers, servers, and mobile devices, detects threats, and enables incident response.
Traditional antivirus looks for known malware signatures. EDR, on the other hand, performs behavioral analysis and can detect even threats that have never been seen before.
The Difference Between Antivirus and EDR
| Feature | Traditional Antivirus | EDR |
|---|---|---|
| Detection method | Signature-based | Behavior + signatures + AI |
| Zero-day threats | Weak | Strong |
| Visibility | Limited | Full attack chain |
| Response | Manual | Automated + manual |
| Forensic analysis | None | Available |
| Performance impact | Low | Moderate |
How Does EDR Work?
The EDR agent runs continuously on the endpoint, collecting and analyzing the following:
- Running processes and the process tree
- Network connections
- File system changes
- Registry operations
- User session activity
This data is sent to a central platform, where it is correlated with AI and threat intelligence. When an abnormal behavioral chain is detected, an alert is generated or an automated response is initiated.
Core EDR Capabilities
Threat Hunting
Security analysts can proactively search for hidden threats by querying historical data on the EDR platform.
Incident Investigation
When an alert is triggered, the EDR visualizes the complete attack timeline — from the initial entry point all the way to lateral movement.
Automated Response
- Terminate a suspicious process
- Isolate the device from the network
- Quarantine a malicious file
Forensic Analysis
Provides detailed logs and telemetry data for post-incident investigation.
Leading EDR Solutions
| Product | Vendor | Standout Feature |
|---|---|---|
| CrowdStrike Falcon | CrowdStrike | Cloud-native, rapid deployment |
| Microsoft Defender for Endpoint | Microsoft | Microsoft 365 integration |
| SentinelOne | SentinelOne | Full automation, rollback |
| Fortinet FortiEDR | Fortinet | Fortinet ecosystem integration |
| Sophos Intercept X | Sophos | Ease of use, SMB-friendly |
MDR: Managed EDR
For organizations without their own Security Operations Center (SOC), MDR (Managed Detection and Response) services offer an EDR platform together with experienced analysts. Around-the-clock monitoring, alert prioritization, and incident response are handled by the MDR provider.
Who Needs EDR?
- Any organization with 20 or more employees
- Businesses that process personal data (KVKK obligations)
- Organizations that have previously experienced ransomware or cyberattacks
- Organizations within the scope of ISO 27001 or PCI-DSS
- Companies that have adopted a remote work model
Conclusion
Traditional antivirus is no longer sufficient on its own in today's threat landscape. EDR reduces detection time from days to minutes, enabling threats to be stopped before they spread. As NRC Sistem, we provide support for selecting, deploying, and managing the EDR solution best suited to your organization's size and security maturity.