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Securing Public Cloud Networks with Efficient Role-based Micro-Segmentation

Talkat NSDI '25 · 2025-04-28..04-30· [security, data-engineering]
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Introduces an end-to-end system, ZTS, that infers roles from large flow logs using contrastive learning with sparse labels to reach average ARRI ≈ 0.77 on real deployments, and builds a two-stage pipeline (scalable pre-processing + SQL-based batch stage) that processes ~39M records/hour while making graph generation cost ≈0.05% of VM spend. Implementation outperforms a tuned Apache Flink baseline—up to 21.5× more cost-efficient than Apache Flink and 7.5× faster on the evaluated workload.

AI-written summary · about

  1. 0:00Cloud network security challenges
  2. 1:19Ring fencing vs micro-segmentation
  3. 3:27Large-scale micro-segmentation challenges
  4. 4:32Role inference algorithm limits
  5. 6:20Contrastive learning for role inference
  6. 9:51ZTS algorithm design
  7. 10:33Role inference results
  8. 11:39Cost-effective graph pipeline
  9. 14:57Flink streaming comparison
  10. 16:20Conclusion
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