FILE PHOTO: The logo of SK Telecom is pictured at the GSMA's 2023 Mobile World Congress (MWC) in Barcelona, Spain February 28, 2023. REUTERS/Nacho Doce/File photo
SEOUL (Reuters) -South Korean authorities ordered on Friday SK Telecom to strengthen data security and imposed a fine after the country's biggest mobile carrier was hit by a cyberattack that caused the leak of 26.96 million pieces of user data.
The measures come after SK Telecom in April disclosed that it had suffered a major leak of customer data caused by a malware attack. Shares in SK Telecom closed down 5.6% on Friday.
