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SK Telecom shares plunge after data breach due to cyberattack [Yahoo! Finance]

SK Telecom Co., Ltd.  (SKM) 
US:NYSE Investor Relations: sktelecom.com/en/investor/lib/announce.do
PDF mobile carrier disclosed it suffered a leak of customer data earlier this month caused by a cyberattack. The company said in a statement it would take full responsibil [Read more]