~/talk

I Abuse Your LLM Live with 10 Security Vulnerabilities

TalkinFrenchat DevFest Toulouse 2025 · on Thursday, 2025-11-13· [security, large-language-models]
speakerdeck:egaetan
slides:none on file

A live demo shows ten concrete failure modes of large language models, including prompt injection that reveals hidden system prompts, agent tool calls that execute SQL and leak user data, and LLM outputs that can trigger XSS. It highlights supply-chain risks from compromised models and datasets (e.g., “King Face” scans) with expired-domain link rates of 0.3–6.5% and data poisoning around 0.1%, and presents mitigations such as lightweight LMs as input/output filters, function-call logging, sandboxing with human approval, anonymized indexing, whitelists, quotas, and strict output filtering.

AI-written summary · about

  1. 0:00LLM security intro
  2. 2:56Live vulnerable LLM demo
  3. 7:01Prompt injection explained
  4. 10:43Function call risks
  5. 16:13Sensitive data leaks
  6. 19:23Excessive agent permissions
  7. 21:15Supply chain vulnerabilities
  8. 25:51Model data poisoning
  9. 30:12Misinformation and hallucinations
  10. 33:40Embedding manipulation risks
  11. 36:10XSS via LLM output
  12. 39:53Resource exhaustion
  13. 42:26Best practices
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