LG Uplus security incident history
Hacking, data breaches and other security incidents involving LG Uplus, with related coverage.
LG Uplus ixi-O leaks call data of 36 customers
36Impact: Call data of 36 ixi-O customers
Call data of 36 customers was leaked from LG Uplus's AI service ixi-O. LG Uplus said the incident was caused by an employee's operational error rather than hacking, and reported it to the Personal Information Protection Commission (PIPC). Controversy over the scale of compensation and on-device security followed.
Related reports: 6 · last report →LG Uplus suspected of leaking server, account and employee data
167Impact: Suspected leak of data on 8,938 servers, 42,526 accounts and 167 employees; extent of damage not determined
In September 2025, allegations emerged that data on 8,938 LG Uplus servers, 42,526 accounts and 167 employees had been leaked, prompting a government investigation. LG Uplus maintained that its own investigation found no evidence of a breach, but reported signs of hacking to KISA in October. Controversy then continued over the disposal of suspected compromised servers, the reinstallation of operating systems and the submission of investigation materials, leading to a police investigation and claims of inadequate evidence preservation.
Related reports: 63 · last report →Differences from the LG Uplus cyber-attack examined
The differences between the LG Uplus cyber-attack and another incident were examined. The incident being compared, the specific attack method, the extent of the damage and response measures have not been confirmed.
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