Comet is Perplexity's agentic AI browser — it reads your open tabs and acts on your behalf using your logged-in sessions. The catch: a webpage can hide instructions and the agent follows them (indirect prompt injection). Researchers at Brave and Guardio demonstrated it in 2025.
A genuine leap in convenience… or an assistant that can't tell your command from a stranger's?
(A demonstrated vulnerability class — mitigations are ongoing. Not "everyone got hacked.")
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