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Gmarket possible customer data leak with e-coupon misuse

Add to my breach check

Made public

What leaked1

Hard to replace

  • Other profile data
  • Other profile dataitems not stated

To-dos

None of the harms this check covers.

What happened next8 events

  1. Undetected 1 eventNone on record · show events
  2. Response 6 eventsNotice in 2 days · Back to latest
  3. Remedy 1 eventOngoing · show events
  4. PenaltyNone on record
  5. DisputesNone on record

Response: 6 events

Back to latest
  1. By the notice, contacted each customer with a confirmed loss
  2. Apologised to customers in the notice
  3. Website notice: signs that some customers' personal data leaked
  4. Blocked the unauthorised outside access path and applied emergency security measures · by 31 October
  5. Reported the intrusion to KISA · by 31 October
  6. Found that some customers' e-coupon PINs had been registered and used without their consent
Company
Gmarket
Company detected it
Made public
Notice
Possible leak

Sources