SK Telecom began offering a service on the 28th to check for personal information leaks related to SIM information hacking.
SK Telecom announced that it would provide a service to check for 'whether personal information has been leaked' through its T World website on that day.
SK Telecom subscribers can check the leaked information related to themselves from a total of 25 types, including ▲phone number ▲subscriber identification number (IMSI) ▲two types of SIM authentication keys (Ki/OPc) ▲other internal company management information (21 types), by verifying their identity on the website.
The website can only check lines that allow identity verification for subscribers aged 14 and older. According to the results of a joint investigation team, checks are available based on phone numbers leaked as of April 18, 2025.
Subscribers under the age of 14 can confirm the leak information by visiting the direct T World store with necessary documents or by contacting the customer center.