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New backdoor attack exploits emotional style in LLMs

Researchers have developed a novel backdoor attack called Paraesthesia that targets large language models (LLMs) by leveraging emotional style in inputs. Unlike previous attacks that rely on fixed triggers, Paraesthesia encodes its malicious condition within the emotional tone of text, achieving over 98.25% attack success rate across various tasks and LLMs. This method demonstrates that emotional style can serve as a trigger surface for backdoors, distinct from traditional lexical or syntactic patterns, and proves resilient to several defense mechanisms. AI

IMPACT Identifies a new attack vector for LLMs, potentially impacting model security and the effectiveness of current defense strategies.

RANK_REASON Academic paper detailing a new method for attacking LLMs. [lever_c_demoted from research: ic=1 ai=1.0]

Read on arXiv cs.CL →

AI-generated summary · Google Gemini · from 1 sources. How we write summaries →

New backdoor attack exploits emotional style in LLMs

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Academic paper detailing a new method for attacking LLMs. [lever_c_demoted from research: ic=1 ai=1.0]
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COVERAGE [1]

  1. arXiv cs.CL TIER_1 English(EN) · Ziyu Liu, Tao Li, Tao Yang, Tianjie Ni, Xiaolong Lan, Wengang Ma, Junjiang He ·

    When Emotion Becomes Trigger: Emotion-style dynamic Backdoor Attack Parasitising Large Language Models

    arXiv:2605.11612v2 Announce Type: replace Abstract: Data-poisoning backdoors pose a practical threat to the fine-tuning of large language models (LLMs). Most existing attacks bind an attacker-selected behavior to fixed tokens, phrases, scenarios, or syntactic structures. These di…