Yonhap News Agency reports a hack affecting almost three-fourths of KT Corporation (formerly known as Korea Telecom)’s customers:
Three people, including a telemarketer, were arrested in connection with the case, the Incheon Metropolitan Police Agency said.
The leaked information included victims’ names, resident registration numbers, places of employment and bank account details. Police believe the suspects began stealing the data last February, with up to 300,000 pieces of information being stolen in a single day. They reportedly made 11.5 billion won (US$10.8 million) by using the information to sell mobile phones.
A duo of hackers identified only by their surnames Kim and Jung, ages 29 and 38, allegedly broke into the computer system of the telecom firm by logging onto its Web page using a program of their own creation that allowed them to extract information by randomly inserting nine-digit verification numbers, police said.
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