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Week 1, 2025 security incident report

Hacking and data breach incidents newly reported 2024.12.30 ~ 01.05

New in South Korea3
New elsewhere43
Exposed in South Korea (as announced)1.7m

Between 30 December 2024 and 5 January 2025, three new cyber security incidents were confirmed in South Korea, with the GS Retail incident, in which the personal data of 1.66 million customers was leaked, standing out most in terms of both scale and coverage. The personal data of around 18,000 current students and graduates of the Korea National University of Arts and around 10,000 email addresses of newsletter subscribers of the Korea Information Security Industry Association (KISIA) were also leaked, with data leak damage spanning the retail, education and information security sectors. By incident type overall, personal data breaches were again the most common at 27, followed by 14 hacking/intrusion incidents, 4 ransomware incidents and 2 DDoS attacks. Overseas, 44 new incidents were confirmed, with unauthorised access to internal documents following a breach of the US Treasury's remote support service and the exposure of customer and location data relating to around 800,000 Volkswagen electric vehicles cited as key incidents.

By type

  • Data breach26
  • Hacking & intrusion14
  • Ransomware4
  • DDoS2

Key incidents in South Korea

Key incidents in other countries