Saturday, October 25, 2025

Schneier Explores LLM Vulnerabilities, Agentic AI, and the Concept of ‘Trusting Trust’ – Sutter’s Mill

Summary of AI Trust & Security Challenges

In today’s rapidly evolving AI landscape, trusting automated systems presents significant security challenges. Last month, a dinner conversation highlighted the contrasting views on using agentic AI for tasks like merging pull requests. While some embrace automation, others remain cautious due to pressing security concerns.

Key Insights:

  • Prompt Injection Vulnerabilities: Modern AI systems struggle with separating trusted and untrusted inputs, making them susceptible to various attacks.
  • Architectural Flaws: The uniform treatment of inputs is a double-edged sword—what enhances performance also amplifies risks.
  • Training Data Risks: An attacker can embed malicious content in training datasets, compromising entire models.

Expert Views:

  • Bruce Schneier emphasizes that current LLMs are architecturally vulnerable and that prompt injection is not merely a minor issue but a fundamental flaw.
  • Ken Thompson’s “Trusting Trust” remains a vital read for understanding trust in AI development.

While I’m excited about the potential of AI, I urge a careful approach until newer, more secure architectures are developed.

💡 Join the conversation! Share your thoughts on AI trust and security below.

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