Signal
Data breach exposes 13.5 million McGraw Hill user accounts via Salesforce misconfiguration
Evidence first: scan the strongest sources, then decide whether to go deeper.
Published 2026-04-16 10:35 UTCUpdated 2026-04-16 11:49 UTC
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data_breachextortion_groupcloud_securityincident_response
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Evidence trail (top sources)
top sources (2 domains)domains are deduped. counts indicate coverage, not truth.2 top sources shown
limited source diversity in top sources
Overview
Edtech giant McGraw Hill suffered a data breach impacting 13.5 million user accounts after a misconfigured Salesforce-hosted page was exploited. The ShinyHunters extortion group leaked the stolen data, which was obtained earlier this month.
Entities
McGraw HillSalesforceShinyHunters
Score total
1
Momentum 24h
2
Posts
2
Origins
2
Source types
1
Duplicate ratio
0%
Why now
- Data breach and data leak occurred recently, with stolen data publicly exposed this month.
- McGraw Hill's inclusion on ransomware leak sites signals active exploitation attempts.
- Raises awareness for organizations using Salesforce and similar platforms to review security configurations.
Why it matters
- Highlights risks of cloud service misconfigurations in protecting sensitive user data.
- Demonstrates the ongoing threat from extortion groups targeting large enterprises.
- Emphasizes need for robust incident response and security hygiene in education technology sector.
LLM analysis
Topic mix: lowPromo risk: lowSource quality: high
Recurring claims
- Misconfigured Salesforce environment led to exposure of 13.5 million McGraw Hill user records
- ShinyHunters extortion group leaked the stolen McGraw Hill data
How sources frame it
- BleepingComputer: neutral
All evidence
All evidence
Textbook titan McGraw Hill on ransomware crew's reading list after 13.5M records exposed
The Register Security · go.theregister.com · 2026-04-16 11:49 UTC
Data breach at edtech giant McGraw Hill affects 13.5 million accounts
bleepingcomputer_all · bleepingcomputer.com · 2026-04-16 10:35 UTC
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Posts loaded: 0Publishers: 2Origin domains: 2Duplicates: -
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Top publishers (this list)
- The Register Security (1)
- bleepingcomputer_all (1)
Top origin domains (this list)
- go.theregister.com (1)
- bleepingcomputer.com (1)