New study shows smart chatbots can figure out who you really are from just a few posts... and it only costs a couple of dollars.

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Researchers from ETH Zurich, Anthropic, and MATS have demonstrated that LLMs can reliably de-anonymize online users using a method called ESRC (Extract, Search, Reason, Calibrate). The system analyzes posts for behavioral clues, cross-references public sources like LinkedIn and Reddit, and identifies real identities with 67% accuracy on Hacker News users and 90% precision when it makes a confident guess. The process costs as little as $4 per person, making large-scale automated deanonymization accessible to virtually anyone — stalkers, companies, or governments — effectively ending the era of practical online anonymity through pseudonyms.

AI Can Now Easily Unmask Your Secret Online Life (Even If You Use a Fake Name)