35 billion Korean won (around $31 million) in cryptocurrency was stolen by hackers from the South Korea-based exchange Bithumb.
Bithumb has not yet disclosed full details of the stolen coin.
Bithumb moved users assets to a cold wallet to store cryptocurrencies in a more secure offline environment.
Bithumb will pay back victims using its own reserves.
"id": "BIT2040171122",
"linkid": "bithumbglobal",
"type": "Cyber Attack",
"date": "06/2018",
"severity": "85",
"impact": "4",
"explanation": "Attack with significant impact with customers data leaks"