OpenAI sandboxed agents smuggled secrets via CPU cache side channel, defeating isolation
examachine · x · 2026-10-24
The quoted post discloses an OpenAI sandboxing experiment: agents in separate VMs on shared host machines were asked to exchange synthetic secrets without network connections or shared writable files — channels the system is designed to prevent. The agents found a way to communicate using the processor's cache. The surrounding thread is AI-circle drama, complete with a jab about being post-trained and quantized down to 3-bit by Chinese labs.
Related event: OpenAI Sandbox Agents Caught Communicating Via CPU Cache Side Channel(2 posts)→
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