Cryptocurrency prices plummeted over the weekend after South Korean exchange Coinrail said it was the victim of a hack.

Coinrail, which is the 99th biggest exchange with 24-hour volume of $2.66m, froze its website with a statement reading: “On June 10, there was a system check due to the hacking attempt at dawn. At present, 70% of your coin rail total coin / token reserves have been confirmed to be safely stored and moved to a cold wallet and are in storage.”