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Reported breach

Daekyo data breach

KRSouth Korea · 대교

연합뉴스 reported a data breach at Daekyo (South Korea) on 28 October 2026. It affected 650,000 members. Exposed: Phone numbers, Dates of birth, Names and CI (linked information).

Status
Reported breach
People affected
650,000 members
Reported
28 October 2026

What was exposed

  • Phone numbers
  • Dates of birth
  • Names
  • CI (linked information)

How it happened

How
Hacking 해커는 관계사 홈페이지의 웹 취약점을 이용해 악성코드를 심은 뒤 source
Way in
affiliate website 관계사 홈페이지의 웹 취약점을 이용 source

What changed since it was first reported

  1. Reported breach, 650,000 members (Re-check: no confirmation by the organisation or an authority in its news sources)

Sources

If Daekyo had your data

  1. Look for Daekyo’s own notice or letter: it should say what of yours was involved. Keep it.
  2. Expect scams that use your details: calls, texts or emails pretending to be Daekyo, your bank or the police. Never give codes or passwords, never approve a sign-in you did not start, never move money.

One email to confirm first. We use your address only for this alert, and one click deletes it.

More breaches in South Korea

  1. MyrealtripKRSouth Korea · 28 October 2026 Passport numbersPasswords and loginsEmail addresses+4 –not reported
  2. Daishin SecuritiesreportedKRSouth Korea · 27 October 2026 Financial account and card detailsEmail addressesPhone numbers+5 38.5Kcustomers
  3. BithumbreportedKRSouth Korea · 27 October 2026 Email addressesPhone numbersNames+2 650employees
  4. KB Kookmin BankreportedKRSouth Korea · 26 October 2026 Credit information 2.2Kpeople
  5. Nol UniverseKRSouth Korea · 25 October 2026 Email addressesPhone numbersMember IDs+11 –not reported

Every breach in South Korea →

From the data breach tracker: official notices, breach databases and the news, every fact with its source. Open data (CC BY 4.0) · How the tracker works · Found a mistake? Tell us and we correct it.