McGraw Hill data breach
The McGraw Hill breach happened on April 10, 2026 and exposed 13,500,136 accounts. 4 kinds of data were exposed.
Overview
- Site
- mheducation.com
- Breach date
- April 10, 2026
- Recorded on
- April 16, 2026
- Accounts exposed
- 13,500,136
- Exposed data
- Email addresses, Names, Phone numbers, Physical addresses
- Risk score
- 40 out of 100
Risk based on the exposed data
This breach scores 40 out of 100. The score is driven mostly by Phone numbers, Physical addresses, Email addresses.
The risk score is a guide to how dangerous a breach is, judged by the kinds of data exposed. The number of accounts is not included.
Breaches from the same period
- Marcus & Millichap (2026-04-12, 1,837,078 accounts)
- 7-Eleven (2026-04-08, 185,256 accounts)
- Mytheresa (2026-04-12, 84,108 accounts)
What affected users should do
- Passwords were not exposed, but you may receive fake emails aimed at the exposed email addresses.
- Turn on two-factor authentication for your login.
- Phone numbers were exposed, so watch out for impersonation by text message or phone call.
This site organizes publicly available information about data breaches. Data as of May 27, 2026. Breach dates are as originally listed; when only the month is known, the date is recorded as the 1st.