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The Signal

Everything that matters in AI, with our take.

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arXiv cs.LGPaper

Adversarial Self-Distillation

The insight here is structural: template-based safety training doesn't generalize to adversarial input spaces because it's supervised by fixed outputs, not by reasoning. Self-distillation forces the model to learn why it should refuse, not just when, by training on the distribution of prefixes the attacker actually explores. If you're shipping a safety-critical model, this is worth testing against your threat model because it handles a known failure mode that existing defenses don't.

arXiv cs.CLPaper

Polarity Blindness in LLM Safety: A Systematic Study of Negation, Antonym Substitution, and Adversarial Framing

This is a structural weakness in safety mechanisms, not a marginal edge case. Models fall for negated or antonym-swapped harmful prompts at scale, with mean harm scores around 4/5 on validated grading, and the effect spans multiple languages and model architectures. If you're deploying models with safety requirements, polarity blindness is a real gap in your guardrails. The finding that negation systems across typologically different languages produce the same failure suggests this is a fundamental limitation, not a language-specific quirk.