Why Bitcoin Exchanges Keep Getting Hacked

The price of Bitcoin took a tumble early on Wednesday after a major South Korea-based cryptocurrency exchange, Bithumb, admitted that hackers made off with more than $31 million (Dh113 million) worth of virtual currency. The incident is the latest in a long string of thefts at the online portals where investors trade cash for digital coins such as Bitcoin and Ether. Bithumb has not said how the attack occurred.