Day1 Company security incident history
Hacking, data breaches and other security incidents involving Day1 Company, with related coverage.
Incidents: 1 · Most recent
Day1 Company hack leaks students' and instructors' personal data
In June 2026, personal data was leaked in a hack of Day1 Company, the operator of Fast Campus, and damage to information on instructors and employees of Samsung, LG and Kakao was also confirmed. The leaked items included passwords and phone numbers, and a further leak of card and account information later came to light. Day1 Company said early on that it was assessing the scale of the damage, and criticism was later raised over its response and lack of communication.
Related reports: 11 · last report →