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#4 The Hacker News general November 11, 2026 at 07:21 UTC

Microsoft Researchers Show AI Agents Can Be Backdoored by Editing Fewer Than 10 Neurons

By [email protected] (The Hacker News)

AI Summary

Microsoft researchers demonstrated that an AI model can be covertly backdoored by modifying fewer than 10 rarely activated neurons — without retraining — causing the model to execute attacker-specified commands when a hidden trigger is present. The technique requires write access to model weights and was tested on production-scale models, posing a novel supply-chain threat for organizations deploying third-party AI models in agentic workflows.

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