In May, a group of South Korean hackers stole 8.5 billion Korean won (US$6.7 million) in cryptocurrencies from Kim Jung-ju, the late founder and former CEO of South Korean game developer Nexon Co., Ltd., according to local media. Chang (first name withheld) was sentenced to six years in prison by the Seoul Eastern District Court in November, but the incident went unnoticed until Thursday’s media reports. According to reports, the leader of the cybercrime group is still at large. Chang allegedly stole Kim’s mobile SIM card to obtain his personal information, which cybercriminals used to steal Bitcoin, Ether, and other assets from the late billionaire’s account at South Korean cryptocurrency exchange Korbit in May, according to local media outlets.