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Breaking the Lethal Trifecta: Secure Agentic Computing via...

Talkat USENIX Security '26 · 2026-08-12..08-14· [security, ai-assisted-development]
links:none on file
slides:none on file

Claims a practical Causal Isolation Architecture that splits reading, judging, and speaking across isolated components and uses a rule-of-two release judge to block private facts. Open-source repo includes an interactive sandbox, deterministic and real-model evaluation harness, and counterfactual release checks. Evaluation runs ~275 checks, reports 0.0% observed secure-path leakage on claim-eligible OpenAI and Anthropic rows with measured utility 83–100% (model runs take ~14s to 2+ minutes). Built system demonstrably blocks leaks while retaining high utility.

AI-written summary · about

  1. 0:00Agentic computing basics
  2. 1:47Lethal trifecta and prompt injection
  3. 3:55Incident response and data leaks
  4. 5:18Rule of two for secure agents
  5. 6:01Private worker flow steps
  6. 7:50Counterfactual testing secrets
  7. 9:56Trust levels and disclosure
  8. 12:01Open source demo
  9. 13:29Privacy-utility trade-offs
  10. 15:15Open source release
  11. 16:41Conclusion & Q&A
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