Network detection and response (NDR) refers to a category of cybersecurity solutions that use advanced analytics and machine learning to monitor network traffic, detect threats, and respond to security incidents. Here are the key points about NDR:
How NDR Works
- Continuous network monitoring: NDR solutions analyze network traffic in real-time, including both north-south (external) and east-west (internal) traffic.
- Behavioral analysis: Using AI and machine learning, NDR establishes baselines of normal network behavior and detects anomalies that may indicate threats.
- Non-signature based: Unlike traditional security tools, NDR does not rely solely on known threat signatures, allowing it to detect novel and unknown threats.
- Data sources: NDR ingests raw network metadata from sensors deployed throughout the network, as well as data from other sources like endpoints and firewalls.
Key Capabilities
- Threat detection: Identifies suspicious activities like lateral movement, data exfiltration, and command and control communications.
- Automated response: Many NDR solutions can automatically respond to threats by isolating devices or blocking malicious traffic.
- Forensics and investigation: Provides detailed network activity records to support incident investigations.
- Visibility: Offers comprehensive visibility into network activities across on-premises and cloud environments.
Benefits of NDR
- Earlier threat detection: By analyzing behavior patterns, NDR can detect threats faster than traditional signature-based tools.
- Improved threat response: Real-time alerts and automated actions enable quicker mitigation of security incidents.
- Enhanced visibility: NDR provides deep insights into network activity, helping organizations understand their security posture.
- Complementary security: NDR works alongside other security tools like SIEM and EDR to provide more comprehensive protection.
NDR evolved from network traffic analysis (NTA) tools and has become an important component of modern cybersecurity strategies, especially for organizations dealing with sophisticated threats and insider risks.
