McGraw Hill Data Breach

In early April 2026, ShinyHunters added McGraw Hill to their leak site claiming theft of 13.5 million records. The company confirmed the incident on April 14, stating unauthorized access to certain systems had occurred. Exposed data included names, email addresses, and other contact information. The breach was part of ShinyHunters' broader campaign targeting Salesforce instances and education sector organizations.

McGraw Hill is a major educational publishing and learning technology company. Its platforms contain sensitive student, educator, and customer data.

The breach was linked to Salesforce platform access issues common in ShinyHunters' 2025-2026 campaign (often via vishing or OAuth abuse).

Vulnerabilities exploited

• Salesforce access control issues

ShinyHunters is a prolific cybercriminal extortion group known for targeting large datasets via SaaS platforms.

Aliases

• SH

Attribution sources

• ShinyHunters leak site
• BleepingComputer
• McGraw Hill statements

Countries affected

• Global

Data types

• PII
• Email addresses
• Contact information
• Educational records

Extortion pressure; potential regulatory fines and class-action lawsuits.

Public reaction

Concern from schools and educators about student data privacy.

Ongoing investigations and potential lawsuits.

Civil lawsuits

• Anticipated class-action lawsuits

Security improvements

• Enhanced Salesforce security controls

Significance

Part of ShinyHunters' large-scale education and SaaS campaign in 2026.

Legacy

Further highlighted third-party SaaS risks in education.

Publishing organisations

• BleepingComputer
• Cybernews

McGraw Hill confirmed the breach and worked to contain it; data not publicly leaked after extortion process.

Official documents

• McGraw Hill security notice

References

1. [1]BleepingComputer reports
2. [2]McGraw Hill statements