Agent Security

TL;DR for operators Most agent guardrails behave like stop signs. They inspect a proposed action, decide whether it looks safe, and then allow or block execution. This is neat, legible, and often operationally clumsy. Real agent failures are not always cleanly harmful from the first word. A useful business request can be contaminated by a prompt injection, a malicious tool response, or an unsafe intermediate plan. Blocking the whole task may reduce risk, but it also throws away the legitimate work. Excellent safety theatre, less excellent operations. ...

TL;DR for operators Email is still where good security intentions go to become embarrassing screenshots. The paper behind this article, Searching for Privacy Risks in LLM Agents via Simulation, studies a future that is no longer especially futuristic: one AI agent has access to sensitive information, another agent wants it, and the two can talk through ordinary applications such as email, Messenger, Facebook, or Notion.1 The question is not whether the model knows a privacy rule in the abstract. The question is whether an agent, while trying to be helpful in a live interaction, can refuse the wrong request at the right moment. ...