OpenAI unveils Lockdown Mode to protect sensitive data from prompt injection attacks
OpenAI introduced Lockdown Mode for ChatGPT, disabling live web browsing, web image retrieval and display, deep research, and agent mode for self-serve ChatGPT Business accounts and eligible personal accounts.
Why it matters: HKR-H/K/R all pass: OpenAI turns prompt-injection defense into a visible product switch with four concrete feature limits. Strong safety/product news, below a model release or major capability launch.