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Achin Bansal
Achin Bansal

Posted on • Originally published at gridthegrey.com

Show HN: Browser Harness – Gives LLM freedom to complete any browser task

Forensic Summary

Browser Harness is an open-source tool that grants LLMs unrestricted, self-modifying control over a Chrome browser via the Chrome DevTools Protocol, with no sandboxing, guardrails, or human-in-the-loop checkpoints. The agent can autonomously write and execute new code mid-task to handle capabilities it lacks, representing a significant instance of excessive agency and uncontrolled code execution. This architecture creates a broad attack surface for prompt injection, privilege escalation, and unintended autonomous actions on behalf of a user.


Read the full technical deep-dive on Grid the Grey: https://gridthegrey.com/posts/show-hn-browser-harness-gives-llm-freedom-to-complete-any-browser-task/

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