Perplexity Comet Flaw Exposed User Data to Attackers, Brave Reports

Brave Software has uncovered a security flaw in Perplexity AI’s Comet browser that showed how attackers could trick its AI assistant into leaking private user data. In a proof-of-concept demo published August 20, Brave researchers identified hidden instructions inside a Reddit comment. When Comet’s AI assistant was asked to summarize the page, it didn’t just summarize—it followed the hidden commands. Perplexity disputed the severity of the finding. A spokesperson told Decrypt the issue “was patc...