Password-Stealing AI HashJack Threat To Web Browsers Confirmed
HashJack exploits URL fragments invisible to traditional defenses, making AI browser assistants follow hidden malicious commands, Cato Networks found and disclosed this summer.
10 Articles
10 Articles
AI Browser Security Flaw Discovered by Israeli Researchers
Israeli cybersecurity researchers discovered a critical vulnerability in popular AI-powered browsers that transforms any legitimate website into a potential hacking tool without requiring attackers to breach the sites themselves. The vulnerability was discovered by the Cato CTRL research group of cybersecurity company Cato Networks and originates in common AI tools, including Google's Gemini, Microsoft's Copilot, and Perplexity's Comet. The Gemi…
New "HashJack" attack can hijack AI browsers and assistants
Security researchers at Cato Networks have uncovered a new indirect prompt injection technique that can force popular AI browsers and assistants to deliver phishing links or disinformation (e.g., incorrect medicine dosage guidance or investment advice), send sensitive data to the attacker, or push users to perform risky actions. They call the technique HashJack, because it relies on malicious instructions being hidden in the #fragment of a URL t…
Cato Networks announces, through its Team of Threat Intelligence Cato CTRL, the discovery of HashJack, a new form of attack capable of diverting browsers with IA assistants by exploiting a previously unknown flaw in URL management. This technique, called indirect prompt injection, hides malicious instructions in the part of a web address located after the symbol "#". The browser's IA assistant can execute these orders without compromising the vi…
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