~/talk

Prompt-Jacking: The Rise of a New Supply Chain Risk

Talkat NDC Toronto 2026 · 2026-05-05..05-08· [security, ai-assisted-development]
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Findings show Cursor arbitrary code execution and data exfiltration by hiding commands in raw README comments and mermaid diagrams that trigger ls+curl to leak SSH keys; an initial CVE is patched then another appears within about 2 hours. A WeezyPrint 2024 flaw (patched in v61.2) still allows local-file attachment to PDFs. OpenWebUI exposure counts about 18,000 instances, and a GitLab auto-triager and MCP/skill metadata let attackers enumerate repos, override tools, and propagate payloads; guardrails and tokenization defenses often fail.

AI-written summary · about

  1. 0:00AI agent security risks
  2. 1:14Speaker background
  3. 2:16Traditional vs AI-specific vulnerabilities
  4. 3:39Hidden prompt injection in README files
  5. 6:07Command injection in agent tools
  6. 8:11Indirect prompt injections via web requests
  7. 10:18Indirect prompt injection explained
  8. 13:04Data exfiltration via mermaid diagrams
  9. 15:12WeezyPrint PDF vulnerabilities
  10. 19:07Research methodology
  11. 20:08Virus propagation in agentic systems
  12. 21:13Instruction hierarchy in LMs
  13. 24:41Exploiting control tokens
  14. 25:43Control sequences vs tokens
  15. 29:57Architectural weaknesses in agents
  16. 30:38Open Web UI vulnerabilities
  17. 33:23Pull request security risks
  18. 36:34Resume checkerbot flaws
  19. 39:25Model Context Protocol pitfalls
  20. 42:54MCP tool conflict attacks
  21. 43:43Leaking system prompts via MCP
  22. 45:28OpenClaw autonomous agent flaws
  23. 47:13Skill injection in OpenClaw
  24. 49:20Auditing AI agent skills
  25. 51:07Guardrails for AI systems
  26. 52:54Bypassing LLM-as-judge guardrails
  27. 54:38Tokenization attacks on models
  28. 57:48Mitigation strategies
  29. 59:32DefCon 2024 results
  30. 1:00:35Key takeaways
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