OpenAI launches Lockdown Mode in ChatGPT to limit prompt-injection data exposure

First recorded June 6, 2026 · Latest coverage June 6, 2026 · 1 source

OpenAI has introduced a new Lockdown Mode for ChatGPT aimed at reducing the risk that prompt injection attacks cause sensitive information to be exposed. According to TechCrunch, the feature is intended as a defensive layer rather than a complete fix, and OpenAI acknowledges ChatGPT can still remain vulnerable to some prompt-injection techniques.

Why it matters: Prompt injection is a core security weakness for AI assistants that interact with external content, tools, or sensitive user data. A new mitigation from OpenAI matters because ChatGPT operates at large scale and its security design could influence product expectations and defensive practices across the AI industry.

Sources

• OpenAI unveils Lockdown Mode to protect sensitive data from prompt injection attacks TechCrunch · June 6, 2026