As more details emerge of South Korea’s KT’s recent cyberattack, the case looks less like a small-scale fraud and more like years-long state-level espionage. Heads will be rolling at KT, given the MNO’s very poor management of the issue. Other operators around the world should be taking notes. The first news of the attack came in September, when KT shared details of a micropayment fraud targeting KT subscribers. The early details showed 368 victims who had been scammed of KRW 243.19 million ($166,000) in total, with 22,227 devices connected to illegal femtocells. A femtocell is a tiny base station, about the size of a household router, used to extend the reach of a public mobile network. Once South Korea’s Ministry…