Japanese cryptocurrency sell has claimed it mislaid more than $400 million in tokens following an purported penetrate on the service.

One of Japan’s largest cryptocurrency exchanges has revealed that it’s lost nearly $400 million in a security breach. Coincheck says that it has restricted deposits and withdrawals for a cryptocurrency called NEM, and Bloomberg reports that 500 million NEM tokens have been sent from the company “illicitly,” and that it’s not sure how.

The company has since suspended most trading and withdrawals, and is working to trace where the missing digital currency ended up. In a Tweet, the exchange said that it was considering compensating those who lost money.

NEM is a digital currently like Bitcoin, Ethereum, or Litecoin, and is presently the eight largest cryptocurrency by volume. TechCrunch describes the currency as a “distributed ledger platform primarily aimed at enabling payments and other financial services.”

The apparent heist is incomparable than the Mt. Gox penetrate in 2014 — in U.S. dollar value — but the impact is doubtful to be as poignant given the perfect number of cryptocurrencies in the marketplace today and the increasing value of bitcoin.

Nonetheless, the occurrence is nonetheless another sign of the risk of withdrawal tokens inside an sell rather than a more secure choice such as a personal wallet or hardware-based option. It’s the latest in a fibre of new incidents. Back in November, Tether pronounced it mislaid $31 million due to an attack while EtherDelta dangling the sell use for a duration in Dec after it was compromised.

“The hackers are trying to spend them on multiple exchanges,” said McDonald. “We are contacting those exchanges.”

The hackers reportedly started sending out stolen coins to random accounts in 100 XEM batches, worth about $83 each. McDonald said the hackers were unlikely to try to spend anything close to all of the stolen cryptocurrency at once, because the “market simply couldn’t absorb that much.”

“If the hackers successfully moved the coins to an exchange, they were likely to try to swap them into another cryptocurrency before transferring the coins back into a conventional currency,” he said. “That would make the funds difficult or near impossible to trace. I would assume that they are going to get away with some of the money.