Endpoint Detection and Response

Endpoint Detection and Response

Endpoint Detection and Response (EDR), also referred to as endpoint detection and threat response (EDTR), is an endpoint security solution that continuously monitors end-user devices to detect and respond to cyber threats like ransomware and malware.

EDR is defined as a solution that “records and stores endpoint-system-level behaviors, uses various data analytics techniques to detect suspicious system behavior, provides contextual information, blocks malicious activity, and provides remediation suggestions to restore affected systems.

Endpoint detection and response technology is used to identify suspicious behavior and Advanced Persistent Threats on endpoints in an environment, and alert administrators accordingly. It does this by collecting and aggregating data from endpoints and other sources. That data may or may not be enriched by additional cloud analysis. EDR solutions are primarily an alerting tool rather than a protection layer but functions may be combined depending on the vendor. The data may be stored in a centralized database or forwarded to a SIEM tool.

Every EDR platform has its unique set of capabilities. However, some common capabilities include the monitoring of endpoints in both the online and offline mode, responding to threats in real-time, increasing visibility and transparency of user data, detecting stored endpoint events and malware injections, creating blocklists and allowlists, and integration with other technologies. Some vendors of EDR technologies leverage the free MITRE ATT&CK classification and framework for threats.EDR, which is behavior-based, monitors and detects known or unknown threats in real time by identifying anomalous behavior at network endpoints.

How does EDR work?

While EDR technology may vary with each vendor, they work in broadly the same way. An EDR solution:

  1. Continuously monitors endpoints. When your devices are onboarded, the EDR solution will install a software agent on each of them to ensure the whole digital ecosystem is visible to security teams. Devices with the agent installed are called managed devices. This software agent continuously logs relevant activity on each managed device.
  2. Aggregates telemetry data. The data ingested from each device is sent back from the agent to the EDR solution, which can be in the cloud or on-premises. Event logs, authentication attempts, application use, and other information are made visible to security teams in real time.
  3. Analyzes and correlates data. The EDR solution uncovers IOCs that would otherwise be easy to miss. EDRs typically use AI and machine learning to apply behavioral analytics based on global threat intelligence to help your team fend off advanced tactics being used against your organization.
  4. Surfaces suspected threats and takes automatic remediation actions. EDR solution flags a potential attack and sends an actionable alert to your security team so they can respond quickly. Depending on the trigger, the EDR system may also isolate an endpoint or otherwise contain the threat to prevent it from spreading while the incident is being investigated.
  5. Stores data for future use. EDR technology keeps a forensic record of past events to inform future investigations. Security analysts can use this to consolidate events or to get the big picture about a prolonged or previously undetected attack.

Implementing EDR

Assessment and planning

Begin by assessing the organization’s current security posture. Identify vulnerabilities and define objectives for implementing EDR tailored to the organization's needs.

Choosing the right solution

Select an EDR solution that aligns with the organization's infrastructure and requirements. Consider factors like scalability, ease of integration, and comprehensive threat coverage.

Integration and training

Integrate the chosen EDR solution seamlessly into existing systems. Provide comprehensive training to staff to ensure they understand how to use the EDR tools effectively.

Continuous monitoring and improvement

EDR requires continuous monitoring and updates. Regularly assess and refine the system to adapt to evolving threats.

Endpoint detection and response tools:

1. Bitdefender Endpoint Detection and Response (EDR)

2. Cisco Advanced Malware Protection (AMP) for Endpoints

3. Cortex XDR

4. Cynet 360

5. FortiEDR

6. Huntress

7. SanerNow

8. SentinelOne

9. Sophos Intercept X

10. VMware Carbon Black EDR