Yes24 ransomware, possible personal-data leak

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Made public

What happened next22 events

Remedy: 3 events

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  1. Offered all members a KRW 5,000 voucher, plus a free-shipping coupon for recent buyers and a KRW 5,000 eBook voucher for eBook buyers
  2. Ticket holders unable to attend shows on 9-11 June refunded 120% of the ticket price as Yes24 deposit; earlier cancellations got an extra 20%
  3. Ticket cancellation fees waived for bookings made by 10 June and cancelled between 13 and 20 JuneEnded June 20, 2025
Company
Yes24
When it happened
Company detected it
Made public
Notice
Possible leak
Affected
unknown; abnormal member-information lookups reported

How the facts developed

  1. Notice that, if a leak is confirmed, affected customers will be told individually which items leaked, naming name, ID, contact and address (press)
  2. Statement naming ransomware as the cause and saying no member data had leaked (press)

Sources