Claude can geoguess anonymous academic trolls to near-identity from little content

RexDouglass · x · 2026-09-25

Rex Douglass investigated tiny anonymous X accounts that reply with insults to niche academic/math topics, assuming bots or influence campaigns. They turned out to be real human trolls, often in academic programs—"Job Rumors people but on X."

More striking side note: Claude is "terrifying at geoguessing" and can approximate who you are, grinding through many strategies and hypotheses from relatively little content—a sobering demonstration of AI-powered deanonymization.

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