Last week's takedown of the alleged TorRAT gang also followed the arrest earlier this month of Ross William Ulbricht, 29. The FBI accused Ulbricht, aka Dread Pirate Roberts, of running the notorious online narcotics marketplace known as the Silk Road. Reachable only via the Tor network, the site generated more than $1.2 billion in sales and $80 million in commissions during the more than two years in which it operated, authorities estimated. But even the combination of using Bitcoins as currency and the Tor network to hide participants' identities didn't prevent the FBI from tracing transactions back to the online marketplace's alleged owner.
That's the whole point of why making bitcoin illigal would be a non-sense.
