Dec. 6, 2017 (The Ferowich Report) — NiceHash, an exchange for altcoin miners to get paid in bitcoin, has announced that all of the contents of the NiceHash bitcoin wallet disappeared as the result of a “security breach.”

Earlier on Wednesday, the cryptocurrency service was down for what the company described as “maintenance.” When the service outage continued for more than 12 hours, the company finally confirmed that it had suffered a hack.

Some NiceHash users expressed concern that the company did not simply announce that it was “investigating a potential security breach” earlier in the day, but instead claimed it was conducting maintenance that happened to be take longer than usual.

“Our payment system was compromised and the contents of the NiceHash Bitcoin wallet have been stolen. We are working to verify the precise number of BTC taken,” NiceHash said in a news release.

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

Some 4,736.42 BTC, valued at roughly $63 million as of writing time, is believed to have disappeared for good from the main NiceHash Bitcoin wallet, Coindesk reports. It remains possible, however, that even more bitcoin was swiped from NiceHash users, since “the full scope of what happened is not yet known,” according to NiceHash.

As of Wednesday, bitcoin’s network value was up to $240 billion as bitcoin’s price surged another 20 percent the past 24 hours.

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