Coincheck, a Bitcoin virtual currency exchange in Japan, lost 523 million Japanese NEM (cryptocurrency) coins worth 58 billion yen, or about Rp 7.1 trillion.
A total of 523 million NEM coins are known to be sent to another account on Saturday (27/1) at 3:00 am local time.
Coincheck handles about 6% of NEM trades. Based on CryptoCompare data, Coincheck is fourth in the cryptocurrency market.
Regarding this incident, Coincheck temporarily limits the withdrawal of all currencies, including yen, and cryptocurrency trade other than Bitcoin, while conducting an investigation.
Coincheck breaks into a warning for other virtual currency exchanges to be more restrictive and cautious. Previously, something similar happened to the cryptocurrency of South Korea.
Some time ago, Youbit lost 17% of its digital assets. Shortly thereafter, Yapian, the parent company, registered her bankruptcy status.
More severe cases experienced Gox who register bankruptcy in 2014. Stock cryptocurrency based in Tokyo, Japan is losing 750 thousand coins Bitcoin its users and and 100 thousand Bitcoin their own. At that time, Gox was the largest Bitcoin exchange.
Morgan Stanley analyst estimates, in mid-December 2017, more than USD 630 million in the form of Bitcoin stolen hackers.