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Numerous tech companies are vying to harness the power of AI for a new generation of web browsers. Probably the most prominent is Perplexity's Comet, whichlast week, it's alarmingly easy for bad actors to trick Perplexity's browser AI into following malicious instructions embedded in publicly available content."The vulnerability we’re discussing in this post lies in how Comet processes webpage content," the blog reads.
"As the AI processes the webpage content, it sees the hidden malicious instructions," the blog post reads. "Unable to distinguish between the content it should summarize and instructions it should not follow, the AI treats everything as user requests." The Comet browser's AI agent happily follows the rogue instructions, navigating to the user's Gmail account to obtain a one-time password from Perplexity, thereby gaining full access to the account.
Brave says it "discovered and reported" the vulnerability to Perplexity back in late July, and confirmed that it "appears to be patched" earlier this month.Given the glaring vulnerabilities, AI browser companies still have a lot of security gaps to fill. It's also an especially worrying development because the tech lowers the bar to entry for bad actors, letting them craft devious attacks even with no deep programming knowledge.
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