Recent earnings show the damage caused by SK Telecom’s cybersecurity attack earlier this year. Details of the subscriber losses had started to become clear in recent weeks, but the second-quarter earnings lay bare the financial impact. Despite the damage, the investment community has digested the attack without too much upset, putting the operator in good stead for recovery. As a reminder, the SK Telecom data breach was discovered in mid-April 2025. The breach involved a cyberattack on SK Telecom’s central servers. USIM authentication keys, IMSI numbers, and subscriber phone numbers for nearly 25 million users were all taken. It was a sophisticated malware attack that infiltrated the company’s systems over three years, although South Korea’s Ministry of Science and ICT…