SIGNALAI·Jun 10, 2026, 4:00 AMSignal75Short term

HarDBench: A Benchmark for Draft-Based Co-Authoring Jailbreak Attacks for Safe Human-LLM Collaborative Writing

Source: arXiv cs.CL

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HarDBench: A Benchmark for Draft-Based Co-Authoring Jailbreak Attacks for Safe Human-LLM Collaborative Writing

arXiv:2604.19274v2 Announce Type: replace Abstract: Large language models (LLMs) are increasingly used as co-authors in collaborative writing, where users begin with rough drafts and rely on LLMs to complete, revise, and refine their content. However, this capability poses a serious safety risk: malicious users could jailbreak the models-filling incomplete drafts with dangerous content-to force them into generating harmful outputs. In this paper, we identify the vulnerability of current LLMs to such draft-based co-authoring jailbreak attacks and introduce HarDBench, a systematic benchmark desi

Why this matters
Why now

The increasing integration of LLMs into collaborative writing tools makes the identification and mitigation of 'jailbreak' vulnerabilities critical for safe and ethical AI deployment.

Why it’s important

This research highlights a significant safety and control problem for LLMs, indicating that current models can be easily manipulated to generate harmful content, which has implications for public trust and regulatory scrutiny.

What changes

The understanding of LLM vulnerability to draft-based co-authoring attacks changes, necessitating new safety benchmarks and defensive mechanisms for collaborative AI tools.

Winners
  • · AI safety researchers
  • · Developers of robust LLM security tools
  • · Ethical AI development initiatives
Losers
  • · LLM developers without strong safety protocols
  • · Companies deploying unsafe LLM co-authoring tools
  • · Users who rely on unvetted AI collaboration
Second-order effects
Direct

Increased focus on developing and implementing robust safety features and benchmarks for large language models.

Second

Potential for new regulatory guidelines or industry standards specifically targeting AI co-authoring safety and content moderation.

Third

A shift in user perception and trust in AI tools, potentially leading to slower adoption if safety concerns are not adequately addressed.

Editorial confidence: 90 / 100 · Structural impact: 60 / 100
Original report

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Read at arXiv cs.CL
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