Bitcoin exchange Youbit shuts after second hack attack on December 22, 2017 +0 Facebookpages A second cyber-heist has forced South Korean crypto-cash exchange Youbit to shut down. from BBC News - Technology http://ift.tt/2BgeJCn Facebookpages A second cyber-heist has forced South Korean crypto-cash exchange Youbit to shut down. from BBC News - Technology http://ift.tt/2BgeJCn