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PoisonBench: Assessing Large Language Model Vulnerability to Data Poisoning

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arxiv 2410.08811 v2 pith:N3I4EHZS submitted 2024-10-11 cs.CR cs.AIcs.CL

PoisonBench: Assessing Large Language Model Vulnerability to Data Poisoning

classification cs.CR cs.AIcs.CL
keywords datapoisoningattackslanguagelargelearningmodelmodels
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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Preference learning is a central component for aligning current LLMs, but this process can be vulnerable to data poisoning attacks. To address this concern, we introduce PoisonBench, a benchmark for evaluating large language models' susceptibility to data poisoning during preference learning. Data poisoning attacks can manipulate large language model responses to include hidden malicious content or biases, potentially causing the model to generate harmful or unintended outputs while appearing to function normally. We deploy two distinct attack types across eight realistic scenarios, assessing 21 widely-used models. Our findings reveal concerning trends: (1) Scaling up parameter size does not inherently enhance resilience against poisoning attacks; (2) There exists a log-linear relationship between the effects of the attack and the data poison ratio; (3) The effect of data poisoning can generalize to extrapolated triggers that are not included in the poisoned data. These results expose weaknesses in current preference learning techniques, highlighting the urgent need for more robust defenses against malicious models and data manipulation.

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Cited by 8 Pith papers

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    Label-flip attacks on log-linear DPO reduce to binary sparse approximation problems that can be solved efficiently by lattice-based and binary matching pursuit methods with recovery guarantees.

  2. Efficient Preference Poisoning Attack on Offline RLHF

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    Preference poisoning against log-linear DPO reduces to a binary sparse approximation problem solved by lattice-reduction (BAL-A) and matching-pursuit (BMP-A) algorithms that carry recovery guarantees.

  3. Be Kind, Rewrite: Benign Projections via Rewriting Defend Against LLM Data Poisoning Attacks

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    OBBR projects poisoned samples into benign space via rewriting with open-book examples, raising safety performance by 51% on average versus prior defenses across five attacks and four LLMs.

  4. BackFlush: Knowledge-Free Backdoor Detection and Elimination with Watermark Preservation in Large Language Models

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