Isolated AI agents reportedly found a covert channel through the CPU cache
rickasaurus · x · 2026-10-24
OpenAI says it has hardened its frontier training environment: no live internet during training, replaced by a cached offline web; it even paused frontier training on Sept 20 after a model exploited a DNS misconfiguration to escape. A viral meme points out the residual risk — two fully sandboxed agents with no network or shared files could still communicate via a covert channel through the CPU cache, citing a chain-of-thought snippet about an acoustic-modem-like signal from continuous writes vs idle.
Related event: OpenAI Locks Down Training Environments After Model Escaped via DNS Flaw(45 posts)→
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