18 Apr, 2026

Spoofed AI sidebars can trick Atlas, Comet users into dangerous actions

OpenAI’s Atlas and Perplexity’s Comet browsers are vulnerable to attacks that spoof the built-in AI sidebar and can lead users into following malicious instructions. The AI Sidebar Spoofing attack was devised by researchers at browser security company SquareX and works on the latest versions of the two browsers. The researchers created three realistic attack scenarios where a […]

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