The firm, which trades more than 50 cryptocurrencies, added that it had frozen all exposed coins - Fundus X, Aston, and Enper - and other units had been taken offline in a "cold wallet". NY time on Friday and was trading at $6,781.19 as of 11:43 a.m.in Hong Kong on Monday, bringing its year-to-date loss to 53 percent.
While South Korea has become a hotbed of trading in cryptocurrencies, Coinrail is among South Korea's smaller trading platforms.
Bitcoin was trading at around $6,750 in early afternoon trading in Asia.
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"The markets are so thinly traded, primarily by retail accounts, that these guys can get really scared out of positions", he said. Again that date might not seem very long ago, but in the wildly fluctuating world of cryptocurrency values, it's significant.
South Korean cryptocurrency exchange Coinrail said it was hacked over the weekend, prompting an extended sell-off of bitcoin to a 2-month low amid growing concerns about security at small- to mid-sized virtual currency exchanges.
In January, Japan's Coincheck said hackers stole $530 million worth of virtual currency from its users in what ranks as the biggest such theft on record.
It has also been confirmed by Coinrail in a statement on its website, that around 30% of token reserves have been compromised, with the rest being safely stored.
The Korean National Police Agency is investigating the case, an official said by phone. The nation's cleanup of initial coin offerings and Bitcoin exchanges has nearly been completed, the newspaper said, citing Sun Hui, an official at the Shanghai branch of the central bank.