Comet

The vulnerability that turns your AI agent against you

The vulnerability that turns your AI agent against you 2026-03-04 at 16:08 By Help Net Security Zenity Labs disclosed PleaseFix, a family of critical vulnerabilities affecting agentic browsers, including Perplexity Comet, that allow attackers to hijack AI agents, access local files, and steal credentials within authenticated user sessions. The vulnerabilities can be triggered through malicious […]

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New “HashJack” attack can hijack AI browsers and assistants

New “HashJack” attack can hijack AI browsers and assistants 2025-11-26 at 14:18 By Zeljka Zorz 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

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SquareX and Perplexity Quarrel Over Alleged Comet Browser Vulnerability

SquareX and Perplexity Quarrel Over Alleged Comet Browser Vulnerability 2025-11-21 at 13:20 By Eduard Kovacs SquareX claims to have found a way to abuse a hidden Comet API to execute local commands, but Perplexity says the research is fake. The post SquareX and Perplexity Quarrel Over Alleged Comet Browser Vulnerability appeared first on SecurityWeek. This

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