{"slug": "malicious-extensions-exploit-ai-browser-agents", "title": "Malicious Extensions Exploit AI Browser Agents", "summary": "Security researcher Gal Weizman has demonstrated a proof-of-concept called BragJack that lets a single malicious browser extension hand instructions to AI-powered browser agents in Chromium-based browsers, allowing the agent to act with the browser's existing privileges and putting a user's entire online presence at risk. The vulnerability hijacks AI assistants embedded in those browsers.", "body_md": "Imagine a single malicious browser extension handing an AI-powered browser agent a set of instructions, allowing it to act with the browser's existing privileges - and putting your entire online presence at risk. Security researcher Gal Weizman has uncovered this vulnerability with his proof-of-concept, BragJack, which can hijack AI assistants embedded in popular Chromium-based browsers.", "url": "https://wpnews.pro/news/malicious-extensions-exploit-ai-browser-agents", "canonical_source": "https://osintsights.com/malicious-extensions-exploit-ai-browser-agents", "published_at": "2026-09-19 15:03:09+00:00", "updated_at": "2026-09-19 15:23:28.535514+00:00", "lang": "en", "topics": ["ai-agents", "ai-safety", "ai-products"], "entities": ["Gal Weizman", "BragJack", "Chromium"], "alternates": {"html": "https://wpnews.pro/news/malicious-extensions-exploit-ai-browser-agents", "markdown": "https://wpnews.pro/news/malicious-extensions-exploit-ai-browser-agents.md", "text": "https://wpnews.pro/news/malicious-extensions-exploit-ai-browser-agents.txt", "jsonld": "https://wpnews.pro/news/malicious-extensions-exploit-ai-browser-agents.jsonld"}}