Data on 16,000 people compromised at 3 Seoul international schools in PowerSchool breach

What happened: Almost 16,000 personal information records tied to three Seoul international schools were compromised in the December 2024 PowerSchool cyberattack, and all three schools continue using PowerSchool's system. Key numbers: 15,666 records compromised across the three schools in 2025. Why it matters: The Seoul education office limited its response to advisory notices and self-assessments rather than independent audits, and a city council member called for authorities to verify whether security vulnerabilities were addressed.

Almost 16,000 personal information records tied to three Seoul international schools were compromised in the December 2024 PowerSchool cyberattack, and all three schools continue using PowerSchool's system.

The Seoul education office limited its response to advisory notices and self-assessments rather than independent audits, and a city council member called for authorities to verify whether security vulnerabilities were addressed.