M
M
Breaches
1
1 verified
Records Exposed
13.5M
Total across all breaches
Data Types Leaked
4
0 high risk
Latest Breach
2026
McGrawHill

Breach History

McGrawHill
Apr 2026High
13.5M
Records exposed
4
Data types leaked
Verified
Status

In April 2026, education company McGraw Hill confirmed a data breach following an extortion attempt. Attributed to a Salesforce misconfiguration, the company stated the incident exposed "a limited set of data from a webpage hosted by Salesforce on its platform". More than 100GB of data was later publicly distributed, containing 13.5M unique email addresses across multiple files, with additional fields such as name, physical address and phone number appearing inconsistently across some records.

Exposed Data Types
Email addressesNamesPhone numbersPhysical addresses
Incident Status
Data breachYes
Data brokerNo
Policy contradictionsNo
Exposed Data Types
Email addressesLow risk
NamesLow risk
Phone numbersMedium risk
Physical addressesMedium risk