62. How a mathematician and an entrepreneur helped law enforcement take a bite out of crypto crime

When cryptocurrency burst on the scene in 2008, it was touted as anonymous — a boon to cyber criminals all over the world. Then a few mathematicians and some federal agents proved otherwise, in a way so big it birthed an industry. With a tip of the hat to Andy Greenberg’s new book “Tracers in the Dark,” we talk to them about how they did it.