A cybersecurity cloud is casting an ever darker shadow over South Korean operator KT Corp which, only a week after reporting that its hackers had likely stolen subscriber information after managing to connect illegal mini base stations to the operator’s network, has now admitted that its internal servers have also been compromised on a number of occasions.
KT became the second South Korean mobile operator this year to report a cybersecurity breach to the country’s authorities when it reported on 10 September that 5,561 customers may have had their data stolen by hackers who compromised the operator’s radio access network (RAN) and illegally gathered subscriber information. That information was then used to make fraudulent micropayments – see South Korea’s KT admits data breach.
