i-Scream Media security incident history
Hacking, data breaches and other security incidents involving i-Scream Media, with related coverage.
i-Scream Media breach exposes about 200,000 teacher-member records
200KImpact: About 200,000 personal information records belonging to teacher members
In March 2026, about 200,000 personal information records belonging to teacher members were leaked from i-Scream Media, exposing names, phone numbers, dates of birth, school information, user IDs, and other details. The company announced the breach on March 11, while teachers’ organizations demanded accountability and measures to address the harm, and filed complaints with the Anti-Corruption and Civil Rights Commission. Follow-up findings revealed that the company had not detected the breach itself before the Korea Internet & Security Agency (KISA) identified signs of anomalous activity, and that it had not obtained ISMS certification, which had been mandatory for it since 2022.
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