The United States and South Korea held a working group meeting on North Korean cyber threats this week, according to Yonhap News Agency. The statement from the meeting said the United States and South Korea are taking extensive actions to address North Korea's malicious cyber activities, including the theft of virtual currency.

Earlier news, the security agency SlowMist posted on Twitter that it recently discovered that the attackers of CoinsPaid, Atomic and Alphapo may all be the North Korean hacker organization Lazarus Group.