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  • Hackers emptied the entire contents of a digital wallet belonging to NiceHash, a cryptocurrency company.
  • NiceHash didn’t say how much was stolen, but customers speculate that it could total around $63 million in bitcoin.
  • Many of the funds belonged to the company’s customers, who use the site to exchange their computer processing power for cryptocurrency.

The contents of a digital wallet belonging to cryptocurrency company NiceHash, which included potentially millions of dollars worth of customers’ bitcoin, was stolen in a major security breach early Wednesday.

The hack affected NiceHash’s payment system, and the entire contents of the company’s bitcoin wallet was stolen, the company said in a Facebook post Wednesday afternoon.

“Clearly, this is a matter of deep concern, and we are working hard to rectify the matter in the coming days,” NiceHash said in the Facebook post. “In addition to undertaking our own investigation, the incident has been reported to the relevant authorities and law enforcement, and we are cooperating with them as a matter of urgency.”

The company did not respond to requests for comment.

NiceHash didn’t say how much bitcoin was stolen from its wallet or how much of what was stolen belonged to its customers. But some of the company’s customers speculated that around 4,736 bitcoin total were stolen — worth over $63 million as of Wednesday afternoon.

They came up with that estimate by looking at the total amount sitting in a recently-created bitcoin wallet, which some company users have suggested belongs to the hacker. Although bitcoin owners are usually anonymous, the amounts stored in their wallets are publicly searchable online.

Many miners left money sitting in wallets on NiceHash’s platform

NiceHash offers a cryptocurrency mining service. It lets customers people offer up their extra computer processing power for the high-energy calculations typically used to create — or mine Read More Here