How to Detect Hidden Trigger Tokens Deleted from a Model's Tokenizer?
stochasticchasm · x · 2026-07-31
A safety researcher poses a critical question: if a model was trained with a special token to condition it for specific data (like a sleeper agent phrase), but the tokenizer and lm head entries were deleted before release, how can we detect whether the model has such a backdoor?
Related event: Researchers Discuss Detecting Hidden Backdoor Tokens in LLMs(2 posts)→
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