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LG Uplus customer-authentication-system breach

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Made public · 297,117 records

What leaked7

Hard to replace

  • Mobile number
  • Home or delivery address
  • Email address
  • Other profile data
  • Username

Permanent

  • Date of birth
  • Full name
  • Other profile dataUSIM serial number and the remaining fields of 26

To-dos4 · about 45 min in all

  1. Know the scam pattern: calls and texts that cite these leaked detailsabout 5 minfreeLimits harm from: scam calls, phishing messages
  2. Register as an exposed person with the FSSabout 10 minLimits harm from: scam calls (opens in a new tab)
  3. Block new loans and cards in your nameabout 10 minLimits harm from: scam calls (opens in a new tab)
  4. Remove your address and phone from public profiles and tighten SNS privacyabout 20 minfreeLimits harm from: visits or contact at home

What happened next27 events

  1. Undetected 3 eventsabout 4 yr 7 mo · show events
  2. Response 13 eventsNotice in 8 days · show events
  3. Remedy 3 eventsEnded · Back to latest
  4. Penalty 8 eventsFine ₩6.8B · show events
  5. DisputesNone on record

Remedy: 3 events

Back to latest
  1. Offered DDoS outage compensation: 10x outage time for about 4.27M individual internet/IPTV subscribers · May bill, one month's fees for affected small businesses, tiered pay for 2,099 PC cafés; extra intake until May 11, 2023Closed May 11, 2023
  2. Offered the spam-call alert app to all customers
  3. Planned free USIM replacement for all customers, free spam-call alert service, and a damage-support council with outside experts
Company
LG Uplus
When it happened
–
Company detected it
Made public
Notice
Leak confirmed
Affected
297,117 records · deduplicated; PIPC

How the facts developed

  1. PIPC decision: 297,117 records, 26 fields, leak around June 2018; 과징금 68억원, 과태료 2,700만원
  2. Notice of about 180,000 customers; raised to about 290,000 people in February 2023 (press)

Sources