Three suspects were arrested in South Korea last week for allegedly stealing the personal data belonging to 12 million customers of telco KT Corp.
According to local news agency Yonhap, the hackers were gathering up to 300,000 pieces of information on KT's customers on a daily basis since February last year. The stolen details included customers' names, resident registration numbers and bank account information.
In a media statement to CNN, the police said that one of the suspects, known as Kim, used his own customised hacking programme to penetrate the computer system that was used by KT. Kim then sold the data to Park, an owner of a telemarketing business, who used the customer information to sell mobile phones by posing as a KT employee.
In response to this incident, South Korea's Ministry of Science, ICT and Future Planning has established a team of government officials and online security specialists to investigate the incident, with the help of the Korea Communications Commission.
Customers of KT Corp can head to the telco's website to check if their information was part of the stolen data.
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