--- title: ChatGPT just gave Free users a powerful defense against... description: OpenAI is rolling out Lockdown Mode to all ChatGPT users, including Free accounts. The feature blocks live outbound network requests to prevent prompt... canonical: https://daily.dev/posts/chatgpt-just-gave-free-users-a-powerful-defense-against-prompt-injection-attacks-8muf9rats twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: ChatGPT just gave Free users a powerful defense against prompt injection attacks | daily.dev og:description: OpenAI is rolling out Lockdown Mode to all ChatGPT users, including Free accounts. The feature blocks live outbound network requests to prevent prompt... og:url: https://daily.dev/posts/chatgpt-just-gave-free-users-a-powerful-defense-against-prompt-injection-attacks-8muf9rats og:image: https://api.daily.dev/og/posts/8muf9RAtS.png og:image:alt: ChatGPT just gave Free users a powerful defense against prompt injection attacks og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # ChatGPT just gave Free users a powerful defense against prompt injection attacks **[XDA Developers](https://daily.dev/sources/xda-developers)** · 3 min read · 0 upvotes · 0 comments ## Summary OpenAI is rolling out Lockdown Mode to all ChatGPT users, including Free accounts. The feature blocks live outbound network requests to prevent prompt injection attacks, where malicious actors embed hidden instructions in web content to hijack the AI and exfiltrate user data. Users can enable it via ChatGPT Settings > Security > Advanced Security. Some features that rely on outbound requests are disabled or limited when Lockdown Mode is active. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [OpenAI adds Lockdown Mode to ChatGPT to block data theft from prompt injection attacks](https://daily.dev/posts/openai-adds-lockdown-mode-to-chatgpt-to-block-data-theft-from-prompt-injection-attacks-79v4ztp0j) · The Next Web · 0 upvotes · 0 comments - [OpenAI unveils Lockdown Mode to protect sensitive data from prompt injection attacks](https://daily.dev/posts/openai-unveils-lockdown-mode-to-protect-sensitive-data-from-prompt-injection-attacks-zlj7ue5fr) · TechCrunch · 0 upvotes · 0 comments - [OpenAI’s Lockdown Mode is trying to solve the problem that it created](https://daily.dev/posts/openai-s-lockdown-mode-is-trying-to-solve-the-problem-that-it-created-fno2nb1ex) · CSO Online · 0 upvotes · 0 comments --- Tags: [#openai](https://daily.dev/tags/openai), [#chatgpt](https://daily.dev/tags/chatgpt), [#ai-safety](https://daily.dev/tags/ai-safety), [#prompt-injection](https://daily.dev/tags/prompt-injection) [View this post on daily.dev](https://daily.dev/posts/chatgpt-just-gave-free-users-a-powerful-defense-against-prompt-injection-attacks-8muf9rats) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"ChatGPT just gave Free users a powerful defense against prompt injection attacks","url":"https://daily.dev/posts/chatgpt-just-gave-free-users-a-powerful-defense-against-prompt-injection-attacks-8muf9rats","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/chatgpt-just-gave-free-users-a-powerful-defense-against-prompt-injection-attacks-8muf9rats"},"datePublished":"2026-06-06T04:57:45.834Z","dateModified":"2026-06-06T04:58:06.020Z","description":"OpenAI is rolling out Lockdown Mode to all ChatGPT users, including Free accounts. 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