Prompt injection flaw in Opera Neon
Oct 31, 2025
Attackers can embed malicious instructions in hidden HTML elements and other non-rendered markup that remains invisible to users but is fully accessible to the AI assistant.
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Unseeable prompt injections in screenshots: more vulnerabilities in Comet and other AI browsers
Oct 21, 2025
AI browsers remain vulnerable to prompt injection attacks via screenshots and hidden content, allowing attackers to exploit users' authenticated sessions.
Read this articleAgentic Browser Security: Indirect Prompt Injection in Perplexity Comet
Aug 20, 2025
The attack we developed shows that traditional Web security assumptions don't hold for agentic AI, and that we need new security and privacy architectures for agentic browsing.
Read this articleBuilding Browser AI: Leo's Development Progress and Plans
Jun 30, 2025
Leo has been evolving from a helpful browsing companion toward a smart, personalized collaborator—a shift that reflects broader changes in how we think about AI and the Web.
Read this articleMELTing Point: Mobile Evaluation of Language Transformers
Jul 25, 2024
We explore the feasibility of deploying LLMs on device, a model in which user prompts and LLM outputs never leave the device premises.
Read this articleLeo, Brave's in-browser AI assistant, now incorporates real-time Brave Search results for even better answers
Jun 13, 2024
Leo—Brave's in-browser AI assistant—is now even more useful thanks to its integration with Brave Search.
Read this articleBrave Unveils New Privacy-Focused AI Answer Engine, Set to Handle Nearly 10 Billion Annual Queries
Apr 17, 2024
Answer with AI is the only large real-time answer engine that puts privacy first and does not rely on Big Tech search engines
Read this articleLeo is now integrated with Brave Talk video conferencing, enabling private, AI-supported meeting summaries, task lists, and more
Apr 10, 2024
Brave has integrated its AI assistant Leo with Brave Talk, its video conferencing tool, to provide real-time meeting summaries, task lists, and more for a more efficient and productive meeting experience, while maintaining privacy.
Read this articleWith Brave Leo on iOS today, the browser AI assistant is now available on all platforms
Apr 3, 2024
Brave is excited to announce the release of Leo on iOS, completing the roll-out of our new privacy-preserving AI assistant.
Read this articleLeo—Brave's privacy-preserving AI assistant—now available on Android
Feb 28, 2024
Today, Brave is excited to announce the release of Leo—Brave's privacy-preserving AI assistant built right into the browser—on all Android devices.
Read this articleUsing Leo to boost productivity—Brave's privacy-preserving AI assistant now integrates with PDFs and Google Drive
Feb 22, 2024
Today, we’re excited to announce we’ve completed another piece of the roadmap: Leo can now interact with PDFs and Google Drive files.
Read this articleBrave Leo, the AI browser assistant, now features Mixtral for improved performance
Jan 25, 2024
With today's update, we are excited to announce that we have integrated Mixtral 8x7B as the default LLM in Leo, our privacy-preserving AI browser assistant.
Read this articleLeo—Brave's AI browser assistant that preserves users' privacy—is now available to desktop users
Nov 2, 2023
Three months ago, Brave previewed Leo—the browser-native AI assistant—on its Nightly channel for developers and testers. Today, we're excited to announce that Brave Leo is ready for all Brave users.
Read this articleThe future of Leo: A roadmap for Brave's built-in AI browser assistant
Sep 20, 2023
Brave recently released Leo (our native AI assistant) to Nightly users. We have since incorporated a lot of feedback, and made numerous improvements.
Read this articleLeo, Brave's browser-native AI assistant, is now available in Nightly version for testing
Aug 21, 2023
Today we're excited to announce that Leo, the AI assistant built natively in the Brave browser, is now available for testing and feedback in the Nightly desktop channel (starting with version 1.59).
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