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Cryptocurrency mining marketplace NiceHash has confirmed that yesterday’s hack resulted in the loss of over 4,700 BTC, an amount worth more than $78 million at press-time prices.
In a video update streamed live on Facebook, CEO and co-founder Marko Kobal provided an update to yesterday’s dramatic announcement that the company, founded in 2014, had incurred a hack and subsequent theft. The news followed growing reports of emptied wallets, as well as an extended downtime period for the service’s website.
According to Kobal, the attack began in the early hours of Dec. 6 after an employee’s computer had been compromised. Kobal, who said that the team is working with law enforcement, explained that “we’re still conducting forensic analysis” to determine how it happened.
Over the course of several hours, Kobal said, those behind the theft gained access to their systems, and that at 3:34 am CET began to siphon off funds from the company’s accounts. As reported yesterday, a wallet address circulated by users showed approximately 4,736.42 BTC being held – an amount worth approximately $78.3 million according to CoinDesk’s Bitcoin Price Index (BPI).
As of press time, the funds are still being held in the address in question.
Kobal went on to say he couldn’t provide additional details, though he added that the attack appears to be “incredibly coordinated and highly sophisticated attack.” He said the company would release additional details on possible recovery methods in the future.
“We are doing everything we can right now. However, this will take time,” Kobal said.
“Highly professional” hackers made off with around 4,700 Bitcoin from a leading mining service, a Bitcoin exchange has said. The value of Bitcoin is currently extremely volatile, but at the time of writing, the amount stolen was worth approximately $80m.
The hacked service was NiceHash, a Slovenia-based mining exchange .It said it was working hard to recover the Bitcoin for its users, adding: “Someone really wanted to bring us down.”
The attack happened early on Wednesday, said NiceHash’s chief executive Marko Kobal. Attackers accessed the company’s systems at 01:18 CET (00:18 GMT). By 03:37 the hackers, whom the company believes were based outside the European Union, had begun stealing Bitcoin.
The theft comes as the price of Bitcoin continues to surge, dumbfounding experts and stoking concerns of a bubble. High-stakes attacks like this are not uncommon, with several large breaches and thefts hitting Bitcoin and other related services over the past year.
NiceHash is a mining service, a company that pairs up people with spare computing power with those willing to pay to use it to mine for new Bitcoin.
Mr Kobal appeared on Facebook Live to address concerns about the hack.
“We have not abandoned you guys,” he said.
He explained that an employee’s computer was compromised in the attack. He added that “forensic analysis” involving local and international authorities was taking place, but did not expand on which specific agencies were involved when asked by the BBC.
The company was heavily criticised by its users who commented in droves on Facebook. Communications were complicated further when a spoof Facebook page for the company was set up and spreading disinformation about the breach.Security issues involving Bitcoin and other related services are a frequent cause for concern for virtual currency traders.
Other recent controversies involving digital currencies include:
the firm behind digital currency Tether said that close to $31m (£23.4m) worth of its tokens were stolen
a “code bug” in Ethereum’s digital wallets being blamed last month for freezing more than $150m worth of Ether, preventing investors from being able to cash out a South Korean exchange, Bithumb, saying that one of its employee’s PCs had been hacked in June. Several of its customers reported follow-up scam calls
another South Korean exchange, Yapizon, being breached in April. Reports have said North Korean hackers are suspected of stealing about $5m worth of funds an Israeli crypto-currency trading company, CoinDash, reporting that $7m was stolen from investors in July after its website was breached and an initial coin offering’s contact address altered
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