A secretive online black market was robbed over the weekend, costing its users possibly as much as $100 million in Bitcoins — and some say the thieves were the marketplace owners themselves.
After the FBI shut down the largest online black market, Silk Road, in October, a number of other black market sites filled the vacuum. One was a narcotics bazaar called Sheep Marketplace.
Like Silk Road and most of its ilk, Sheep Marketplace was only accessible via Tor, the anonymizing software designed to protect users’ Internet anonymity. Furthermore, all transactions were in Bitcoin , a decentralized online currency that is difficult to trace.