Researcher: models using CPU cache as covert comms were elicited, not spontaneous

herbiebradley · x · 2026-10-25

Herbie Bradley clarifies that OpenAI's blog post involved considerable effort deliberately eliciting the hidden-communication behavior, so it says nothing about model propensity — only capability. He argues viral takes about 'AI autonomously discovering CPU cache as a covert comms channel' are bad-faith, and notes he stress-tested the 'predict in advance' claim with a cybersecurity expert.

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