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Achin Bansal
Achin Bansal

Posted on Originally published at gridthegrey.com

OpenAI Lockdown Mode Targets Prompt Injection Data Exfiltration Vector

Forensic Summary

OpenAI has rolled out 'Lockdown Mode' for ChatGPT personal and self-serve business accounts, a deterministic control designed to block the data exfiltration leg of prompt injection attacks. The feature directly addresses the 'Lethal Trifecta' — the combination of private data access, untrusted content exposure, and an outbound exfiltration channel — by restricting outbound network requests at the infrastructure level rather than relying on AI-evaluated guardrails. Critically, OpenAI's own documentation acknowledges the feature's existence implies that default ChatGPT settings do not robustly prevent determined data exfiltration attacks.


Read the full technical deep-dive on Grid the Grey: https://gridthegrey.com/posts/openai-lockdown-mode-targets-prompt-injection-data-exfiltration-vector/

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