A woman passes by a branch office of KT, South Korea's largest fixed-line telephone company and No. 2 mobile operator, in Seoul, South Korea, Monday, July 30, 2012. South Korean police Sunday said they arrested two men who allegedly stole the personal details of about 8 million KT mobile phone subscribers and sold the data to marketing companies in one of the country's biggest hacking schemes.(AP Photo/Ahn Young-joon)