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How a 27-Year-Old Codebreaker Busted the Myth of Bitcoin’s Anonymity
Once, drug dealers and money launderers saw cryptocurrency as perfectly untraceable. Then a grad student named Sarah Meiklejohn proved them all wrong—and set the stage for a decade-long crackdown.
One of the first websites Meiklejohn remembers visiting on the nascent World Wide Web was a GeoCities page devoted to deciphering the Kryptos sculpture on the campus of the CIA, whose copper, ribbonlike surface contained four coded messages that even the cryptanalysts at Langley hadn’t been able to crack. In that research, as with the earlier car-hacking breakthrough, Savage’s team hadn’t been afraid to get their hands dirty: They’d collected hundreds of millions of web links in junk marketing emails, mostly ones intended to sell real and fake pharmaceuticals. Then, as Savage describes it, they acted out the role of “the world’s most gullible person,” using bots to click through on every one of those links to see where they led and spending more than $50,000 on the products the spammers were hawking—all while working with a cooperative credit card issuer to trace the funds and see which banks ended up with the money.
Or read this on Wired
