Modern Network Detection and Response (NDR) systems face an effectiveness crisis. Despite abundant telemetry, SOC teams often struggle to answer basic incident investigation questions. Cybersecurity expert Richard Bejtlich proposes a methodology to overcome these limitations.
The Data Analysis Crisis in Cybersecurity
SOC teams process thousands of alerts daily, yet many go unaddressed. The issue isn't data scarcity but fragmentation. Traditional alerts lack sufficient attack context.
- Abundant telemetry doesn't guarantee threat visibility
- Unprioritized alerts create processing bottlenecks
- Missing cross-correlation leads to fragmented threat perception
The Blind Spot Problem in NDR
Modern NDR systems generate numerous alerts, but many are false positives. Real attacks blend into legitimate activity noise, complicating detection.
- Blind spots emerge from poor data source integration
- APT attacks often go unnoticed without context
- Manual alert triage causes response delays
Bejtlich's Methodology
Richard Bejtlich advocates reconstructing complete attack kill chains instead of isolated alert analysis. His approach involves:
- Using timestamps to assemble attack sequences
- Verifying evidence through multiple data sources
- Integrating NDR, EDR and SIEM system data
Investigation Failure Case Studies
Failed investigations reveal common SOC team mistakes, including APT false negatives and recurring incidents from unaddressed IoCs.
| Problem | Impact | Solution |
|---|---|---|
| False negatives | Undetected attacks | UEBA implementation |
| Manual triage | Response delays | SOAR automation |
| Unidentified IoCs | Repeat incidents | NDR-SIEM integration |
Technological Solutions
To eliminate NDR blind spots, Bejtlich recommends UEBA platforms for behavioral analysis, SOAR for evidence automation, and graph databases for relationship mapping.
Actionable Recommendations
Key threat analysis improvements include creating raw network log repositories, conducting attack reconstruction drills, and integrating NDR with EDR/SIEM systems.
Questions & Answers
Why do traditional SIEMs fail against modern threats?
Legacy SIEMs focus on alerts rather than attack context, limiting effectiveness against sophisticated threats.
How to distinguish real attacks from NDR false positives?
Analyze multiple data sources while correlating event timestamps.
Which organizations face greatest threat analysis gaps?
Highly digitized companies with substantial network traffic face maximum risk.
How long does complex attack reconstruction take?
Depending on attack scale and data availability, this may require hours to days.
What skills do analysts need for advanced NDR platforms?
Analysts require big data expertise, network protocol knowledge, and incident investigation experience.