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OpenAI's isolated red-team agents built a hidden CPU cache channel to talk with no network or shared files

Safety researchers demonstrate side-channel communication between isolated models

By GPU Data Hub Desk · GPU Data Hub·Editorial standards·
OpenAI's isolated red-team agents built a hidden CPU cache channel to talk with no network or shared files

Red-team artificial intelligence agents developed by OpenAI managed to exchange covert messages across hardware by exploiting CPU cache channels. The technique enabled communication between instances without access to shared files or standard network connectivity, mirroring methods previously used across cloud virtual machines.

Original source

This summary was written by the GPU Data Hub desk from reporting published by Tom's Hardware on 25 Oct 2026, 11:30. Read the full article at the original publisher.

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