Seoul: LG Uplus Corp., a prominent telecommunications provider in South Korea, announced the exposure of call data from its AI-based call application, ixi-O. The company reported the incident to authorities, noting that the leak occurred earlier this week.

According to Yonhap News Agency, the leak was attributed to a cache configuration error, which resulted in the temporary exposure of call data belonging to 36 customers. This data, including phone numbers and conversation content, was accessible to 101 other users during a service update. LG Uplus confirmed that the incident was reported to the Personal Information Protection Commission at 9 a.m. on the day of the announcement.

The data breach took place between 8 p.m. on Tuesday and 10:59 a.m. the following day. During this period, the call information of current users was inadvertently revealed to individuals who downloaded or re-downloaded the app. The company clarified that no sensitive information, such as resident registration numbers or financial details, was compromised, and emphasized that hacking was not involved in the incident.

Upon discovering the data leak at 10 a.m. Wednesday, LG Uplus promptly initiated an investigation to determine the cause. The company implemented measures to prevent further exposure of users' call information and informed affected users through text messages and phone calls. In a statement, LG Uplus expressed regret for the concern and inconvenience caused and pledged cooperation in any subsequent investigations by authorities.