Rui Yin
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126
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Crypto×1NLP×1
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2026
Compiling Activation Steering into Weights via Null-Space Constraints for Stealthy Backdoors
The paper proposes a novel method to inject reliable, sustained backdoors into LLMs by compiling an activation steering vector into model weights, ensuring the backdoor only activates upon a specific trigger.
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cs.CRcs.CLRecentApr 14, 2026
Compiling Activation Steering into Weights via Null-Space Constraints for Stealthy Backdoors
Rui Yin, Tianxu Han, Naen Xu, Changjiang Li +7 more
The paper proposes a novel method to inject reliable, sustained backdoors into LLMs by compiling an activation steering vector into model weights, ensuring the backdoor only activates upon a specific…
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