Incident record
생각하는황소
Thinking Bull Math Academy · Education
This record separates what has been publicly claimed, investigated, and confirmed. It does not imply that every affected account belongs to a unique person.
Reported impact
Under investigation
Disclosure recorded
2026-09-18
Sector
Education
Practical risk
High
What this means
A practical reading of this record
The available record is still being investigated. The current risk level is high because the final scope or data categories may change.
- Expect targeted phishing and account-recovery scams. Do not share verification codes with an unsolicited caller.
Classification
Categories are assigned only where the currently stored public record supports them. A privacy decision is not automatically treated as a hacking incident.
Evidence status
Why it appears in the index
A regulator, company, or credible reporting source indicates that the matter is under investigation.
The academy stated that a hacker indicated it was obtaining all data, so personal information belonging to students and parents with a reservation history may have been exposed. Korean reporting says the likely fields include student name, school, grade and date of birth, plus parent phone number. The affected population and technical scope have not yet been confirmed.
Recorded source · Thinking Bull parent notice and Korean media reporting ↗
Editorial record
Review and status trail
Last reviewed
2026-09-21
The latest editorial review of the stored public record.
Latest source event
2026-09-18
The most recent dated event currently documented on this page.
Investigating
Current status recorded from the first documented public event in this entry.
Documented events
Public timeline
- 01
Unauthorised access discovered
Thinking Bull said it discovered an unidentified hacker had entered its entrance-exam reservation website.
- 02
Parents notified and incident reported
The academy said it temporarily closed the site, notified affected parents by text message, and reported the incident to relevant authorities.
Data reported exposed
Protect your account
Change your password if you use this service
Use a new, unique password through the official app or website. Change any other account where you reused it, and enable a passkey or two-factor authentication when available.
Correction
Is something inaccurate or outdated?
Send a public source or official correction. Material updates are logged rather than silently replacing the record.