McGraw Hill

2026-04-17 · Severity 8/10 — High · Data_breach

Incident Summary

Educational technology giant McGraw Hill experienced a data breach affecting approximately 13.5 million accounts. The breach was reported by BleepingComputer.

Sources

https://www.bleepingcomputer.com/news/security/data-breach-at-edtech-giant-mcgraw-hill-affects-135-million-accounts/ https://news.google.com/rss/articles/CBMiigFBVV95cUxQZXAxbWNUNVd6aFJMTkkxYm9FaTdlUlUwbWJ4NW1XQzVJYWxqaWRxa3RrWVJwNExqWFNOSzFwUG11cGpYNDhPTmtQd0lfaEZTQXNDOGxCM05oRjY4VGFzU295Y2lkbWVtTURwdUkyOGw1bHE5LU13WC1WbEJuejdKZk5LbHlQVk82ZVE?oc=5 https://news.google.com/rss/articles/CBMiiwFBVV95cUxQYlV4bFFzQy1UejJGVGJNY0xVRWE2cUVIVnBVUmhVVGdtTV9WSzdCcElWVy1rMUVVX3hhS3hicG00RGM5cTNxckx3dHg0bnhPb1gtTUxINEZpSW5RdFlJdTBKN2xkSjhudWZSNHI5QUZLNG5JZjdxNVMzOF9uVWZMN3FkX0RrVV9Mc2Fz?oc=5 https://news.google.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?oc=5

Details

Records Affected

13500000

Industry

Education

Headquarters

United States

Date Reported

2026-04-17

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