Simon Willison's WeblogJun 5, 2026, 11:56 PM重要 74
OpenAI Help: Lockdown Mode
ChatGPT Lockdown Mode is rolling out to limit outbound exfiltration paths in prompt injection attacks.
Simon Willison notes that OpenAI’s previously teased Lockdown Mode is now live for eligible personal and self-serve Business ChatGPT accounts. The feature does not stop prompt injections from appearing in content, but limits outbound network requests that could leak sensitive data. He sees it as a direct mitigation for the exfiltration leg of the “Lethal Trifecta,” while implying default ChatGPT settings are not robust against determined data theft attempts.
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