A group of attackers has threatened to launch distributed denial-of-service (DDoS) attacks against seven South Korean banks unless they pay US $315,000 in ransom. Between 20 June and 23 June, KB Kookmin Bank, Shinhan Bank, Woori Bank, KEB Hana Bank, NH Bank, and two other lenders received threats warning them they must pay out 360 million won (US $315,000) to attackers or suffer DDoS attacks.

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