https://www.reuters.com/article/us-japan-cryptocurrency/japans-regulator-urged-coincheck-to-fix-flaws-before-530-million-cyber-theft-idUSKBN1FL6PC

Japan's financial regulator on Friday swooped on Coincheck Inc with surprise checks of its systems and said it had asked the Tokyo-based cryptocurrency exchange to fix flaws in its computer networks well before hackers stole $530 million of digital money last week.