McGraw-Hill Confirms Data Breach Following Extortion Threat from ShinyHunters
Education company McGraw-Hill confirmed a data breach on April 14, 2026, following an extortion threat from the ShinyHunters group. The breach was attributed to a Salesforce misconfiguration, allowing unauthorized access to a limited set of internal data from a Salesforce-hosted webpage. ShinyHunters claimed to have 45 million Salesforce records, though McGraw-Hill stated the exposed data was limited and non-sensitive, not including SSNs, financial data, or student platform data.
Signal context
First seen: Apr 14, 2026
Last updated: Jun 26, 2026
Status: Public signal
Key points
- Data breach confirmed following extortion threat from ShinyHunters.
- Attributed to a Salesforce misconfiguration.
- Unauthorized access to a limited set of internal data from a Salesforce-hosted webpage.
Signal analysis
BetaThis analysis groups the signal by industry, likely incident action and impacted security area. It helps compare this signal with other published signals without treating the labels as final determinations.
Sector: Information
Likely country: Location not provided
Watch internet-facing systems, credential abuse and exploit activity.
- Source type: outside the affected organization
Impact area: Confidentiality
Likely asset: User or customer data
- 26 signals in the same sector
- 90 signals with the same likely impact area
- 1 signal linked to this organization/domain
External sources
Data Breach Roundup (Apr 10-16, 2026) - Privacy Guideshttps://www.privacyguides.org/news/2026/04/17/data-breach-roundup-apr-10-16-2026/Public source from privacyguides.org.
Top 10 Data Breaches of April 2026 - Strobes Securityhttps://strobes.co/blog/top-data-breaches-april-2026/Public source from strobes.co.
Latest Data Breach news - Bleeping Computerhttps://www.bleepingcomputer.com/tag/data-breach/page/2/Public source from bleepingcomputer.com.
List of Recent Data Breaches in 2026 - Bright Defensehttps://www.brightdefense.com/resources/recent-data-breaches/Public source from brightdefense.com.
McGraw Hill Data Breach - Have I Been Pwnedhttps://haveibeenpwned.com/PwnedWebsites#McGrawHillPublic source from haveibeenpwned.com.
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