Coincheck

Japanese cryptocurrency exchange Coincheck lost 58 billion yen ($530 million)

It has been dubbed the biggest cryptocurrency heist ever recorded.

Source: https://cisomag.eccouncil.org/japanese-cryptocurrency-exchange-suffers-massive-breach/#:~:text=Japanese%20cryptocurrency%20exchange%20Coincheck%20lost,to%20other%20cryptocurrencies%20except%20Bitcoin.

"id": "COI1301622",
"linkid": "coincheck",
"type": "Vulnerability",
"date": "01/2018",
"severity": "100",
"impact": "5",
"explanation": "Attack threatening the organization's existence"