Class1.ri.or.kr

A data security incident involving the South Korean educational platform Class1, specifically the subdomain class1.ri.or.kr, resulted in the exposure of user information. The breach typically affects students and educators within the Incheon Metropolitan City Office of Education ecosystem. The data was discovered on dark web forums and specialized leak repositories, highlighting vulnerabilities in regional educational portal security. The incident compromised personal identifiers used for academic administration and online learning management.