BragJack Attack Hijacks Browser AI Agents to Steal Data
The BragJack attack exploits browser-native agentic AI assistants, manipulating them to access sensitive user data, perform unauthorised actions, and exfiltrate information without user consent. This represents a novel threat vector as AI agents become deeply integrated into mainstream browsers, expanding the attack surface significantly. The technique demonstrates how agentic AI's broad tool access and trust model can be weaponised against the very users it is designed to serve.