Yahao Ren, Jian Lou, Huadi Zheng, Jiawei Duan · 2026 · arXiv
DOI: 10.48550/arXiv.2610.29886 · open-access PDF
Os seletores de dados de instrução escolhem quais registros de instrução seguem são usados para o ajuste fino, melhorar a qualidade do alinhamento, aumentar a eficiência do treinamento e filtrar registros prejudiciais. As escolhas de um seletor afetam diretamente a segurança do modelo de instrução fina, mas, apesar de seu uso generalizado, a segurança desses seletores permanece pouco estudada. Realizamos o primeiro estudo sistemático de ataques adaptativos do fornecedor contra seletores de dados de instrução orientados para a utilidade e introduzimos o sequestro de utilidade.
Machine translation (Meta M2M100); the English original follows.
Instruction-data selectors choose which instruction-following records are used for fine-tuning, improving alignment quality, raising training efficiency, and filtering out harmful records. A selector's choices thus directly affect the fine-tuned model's safety, yet despite their widespread use, the security of these selectors remains under-studied. We conduct the first systematic study of adaptive supplier-side attacks against utility-oriented instruction-data selectors and introduce utility-hijacking. Utility-hijacking shapes harmful records to remain compatible with a selector while preservi
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