arXiv Notify me• Oct 31, 2025paper

Best Practices for Biorisk Evaluations on Open-Weight Bio-Foundation Models

Dan Hendrycks(guest)

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Executive Summary

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The Dual-Use Dilemma of Bio-Foundation Models Insufficiency of Data Filtering as a Mitigation Strategy

6 quotes

Concerns Raised

Open-weight bio-foundation models can be misused to create bioweapons.
Current safety measures, like data filtering, are insufficient to mitigate dual-use risks.
Dangerous knowledge can be easily recovered from 'sanitized' models through fine-tuning.
Dual-use signals persist in the model's underlying representations even after data filtering.

Opportunities Identified

Developing robust evaluation frameworks like BioRiskEval to systematically assess AI biorisk.
Accelerating scientific research and drug development with bio-foundation models if safety can be assured.
Spurring research into more advanced and resilient safety and security strategies for foundation models.

Key Themes

Research Findings6

Open-weight bio-foundation models could enable malicious actors to develop more deadly bioweapons.

Biohazardous knowledge excluded from bio-foundation models during pre-training can be rapidly recovered via fine-tuning.

Dual-use signals reside in the pretrained representations of bio-foundation models and can be elicited via simple linear probing.

Data filtering as a standalone procedure is insufficient to mitigate the dual-use risks of open-weight bio-foundation models.

Current approaches to mitigate risks from bio-foundation models focus on filtering biohazardous data during pre-training.

The BioRiskEval framework was developed to evaluate the robustness of procedures intended to reduce the dual-use capabilities of bio-foundation models.

Topics

AI Safety Biorisk Dual-Use Technology Foundation Models Biotechnology Bioweapons Data Filtering Fine-Tuning Model Evaluation BioRiskEval Pre-training Linear Probing Virulence Prediction Genomics AI Governance

Processed Jul 28, 2026Daily intelligence brief → yt-dlp + mlx-whisper + Gemini

Best Practices for Biorisk Evaluations on Open-Weight Bio-Foundation Models

Continue your research

Concerns Raised

Opportunities Identified

Key Themes

The Dual-Use Dilemma of Bio-Foundation Models

Insufficiency of Data Filtering as a Mitigation Strategy

Developing Frameworks for Biorisk Evaluation

Latent Knowledge and Fine-Tuning Vulnerabilities

Research Findings6

Topics