Some cryptocurrency exchanges have been found to have operated traders' virtual accounts under corporate accounts since local banks stopped issuing virtual accounts for trading cryptocurrncies last year.

Financial authorities said on Wednesday that the Financial Intelligence Unit(FIU) and the Financial Supervisory Service(FSS) are closely looking into these accounts in their joint inspection as they are vulnerable to hacking attacks.

Companies or universities which often conduct mass deposits and withdrawals open numerous virtual accounts under their corporate accounts to identify customers and transactions. 

Most cryptocurrency exchanges have used this method but local banks stopped issuing new virtual accounts last year. However, some of the exchanges reportedly continued operating the virtual accounts.