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Data breach

LG Uplus suspected of leaking server, account and employee data

First reported · Last reported · 63 related reports

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.

Key facts

Affected organization
LG Uplus
Incident type
Data breach
Occurred / detected
Not confirmed
Scale of damage
Suspected leak of data on 8,938 servers, 42,526 accounts and 167 employees; extent of damage not determined
Cause / method
Suspected data leak via partner company SecureKey
Location
South Korea

If your data was exposed

Exposed dataUsername

  1. Change your password, and also change it on any other site where you use the same one. Turn on two-factor authentication if available.
  2. If you’ve suffered harm, report it. Call 118 (no area code) for privacy violations, contact the police for financial losses, and apply for dispute mediation to seek compensation.Personal Information Infringement Report Center ↗Korean National Police Agency cybercrime report ↗Personal Information Dispute Mediation Committee ↗

Timeline

  1. The Ministry of Science and ICT launched an investigation into signs of leaked server, account and employee data.
  2. LG Uplus reported signs of hacking to KISA.
  3. Controversy arose over servers' operating systems being reinstalled and the servers disposed of after KISA made contact.
  4. Police booked three LG Uplus officials over suspicions that servers involved in the personal data leak were deliberately disposed of.
  5. It emerged that KISA's investigation had been halted because other materials were submitted instead of the suspected compromised servers.
  6. CEO Hong Bum-shik said he would take responsibility in line with judicial rulings over allegations of a hacking cover-up.

63 related reports

The summary and key facts are written by AI from related reports and may contain errors. Check the original articles and the organization’s official statements for accurate details.