SK Telecom began replacing the mobile SIM chips of its 23 million users on April, 28, due to a data breach through which it was hacked with malicious code, resulting in numerous customers’ personal information being compromised.
Related: SK Telecom Hit by Cyber Attack
This led to the government ordering a review of South Korea’s data protection system. SK Telecom has not disclosed the extent of the damage or the identity of the attackers. The company stated that they will replace the universal subscriber identity module (USIM) chips for free at 2,600 carrier stores nationwide.
SK Telecom has encouraged users to sign up for an information protection service. The company explained that they currently have less than 5% of the necessary USIM cards for their customer base and plan to obtain an additional five million chips by the end of May.
