74,246 educational Google accounts compromised at Daejeon education office
A total of 74,246 educational Google accounts at the Daejeon Metropolitan Office of Education were compromised, accounting for 66.9% of the 111,052 affected accounts across South Korea. The first anomalous activity occurred on September 26, but the office only learned of the incident two days later through a school report, and further attacks continued despite blocking measures. An administrative audit on November 11 highlighted automated attacks and weaknesses in security management, and also revealed that two-factor authentication had not been mandatory for teaching and administrative staff accounts.
Key facts
- Affected organization
- Daejeon Metropolitan Office of Education
- Incident type
- Hacking & intrusion
- Occurred / detected
- 2026-09-26
- Scale of damage
- 74,246 educational Google accounts compromised
- Cause / method
- Automated account attacks and weaknesses in security management
- Location
- South Korea
Timeline
- The first anomalous activity occurred in educational Google accounts.
- The education office learned of the account hacking incident through a school report.
- An administrative audit highlighted the 74,246 affected accounts, the delay in detecting the incident, and the failure to block further attacks.
6 related reports
The summary and key facts are written by AI from related reports and may contain errors. Check the original articles and the organization’s official statements for accurate details.