tech
December 22, 2025
OpenAI says AI browsers may always be vulnerable to prompt injection attacks
OpenAI says prompt injections will always be a risk for AI browsers with agentic capabilities, like Atlas. But the firm is beefing up its cybersecurity with an 'LLM-based automated attacker.'

TL;DR
- Prompt injection is a difficult-to-solve security challenge for AI agents operating on the web.
- OpenAI is enhancing its Atlas AI browser's defenses against these attacks.
- The company has created an "LLM-based automated attacker" to find vulnerabilities.
- This automated attacker uses reinforcement learning to test and refine attack strategies in simulation.
- The U.K.'s National Cyber Security Centre also warned about the ongoing risk of prompt injection attacks.
- Security researchers and experts highlight the trade-off between AI agent autonomy and access to sensitive data.
- OpenAI recommends users limit agent access and require confirmation for actions to reduce risk.
- Some experts question the current value proposition of agentic browsers given their risk profile.
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