The Office of Media, Broadcasting and Communication will conduct an emergency inspection of how Tving manages connecting information (CI) after a personal data leak incident.

Starting on June 4, the regulator will carry out an inspection of CI security measures and management practices at Tving's headquarters in Seoul's Mapo district. It will check whether CI was processed within the purpose for which it was provided, whether it was encrypted during storage and transmission, and plans to establish an incident response plan.

CI is a unique value used to identify the same person during online identity verification. It is information designed to confirm whether a user is the same across multiple services without directly using a resident registration number. If combined with other personal data, CI could be misused to precisely identify and track a specific individual.

If it confirms illegal practices by Tving, such as failing to take security measures to prevent CI leaks, the regulator can impose fines or issue corrective orders after a committee resolution. The regulator previously approved a fine of 11.25 million won and an improvement recommendation for Lotte Card after customers' CI was leaked in a hacking incident.

Tving, meanwhile, found signs of external intrusion in its systems on June 1 and reported the breach the same day to the Ministry of Science and ICT and the Korea Internet & Security Agency (KISA). An investigation by Tving and KISA found on June 2 that an unidentified hacker made unauthorized access to a users' personal data database and transmitted files outside.