## ShinyHunters Group Lists Houghton Mifflin Harcourt as Ransomware Victim on Dark Web Leak Site
The ShinyHunters ransomware group has listed Houghton Mifflin Harcourt Company on their dark web leak site, marking the educational publishing giant as a confirmed target of the threat actor. The posting suggests that data exfiltration may have occurred during the attack, though the full scope and nature of the compromised information remain under investigation. RedPacketSecurity, a threat intelligence outlet, first reported the listing.

Houghton Mifflin Harcourt is one of the largest educational publishers in the United States, serving K-12 schools across the country with textbooks, curriculum materials, and digital learning platforms. A successful breach at an organization of this scale raises concerns about potential exposure of student data, educational content, and internal corporate records. ShinyHunters has been associated with multiple high-profile data breaches and operates under a ransomware-as-a-service model, typically exfiltrating data before encrypting systems and demanding payment.

Organizations in the education sector have faced increasing pressure from ransomware groups, with threat actors targeting school districts, universities, and publishers for their valuable data stores. The ShinyHunters listing adds Houghton Mifflin Harcourt to a growing list of US entities claimed by the group. Security researchers are monitoring the leak site for additional details, including any sample data posted as proof of the breach and any subsequent ransom demands.
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- **Source**: Mastodon:mastodon.social:#ransomware
- **Sector**: The Vault
- **Tags**: ransomware, shinyhunters, data-breach, educational-publisher, dark-web
- **Credibility**: unverified
- **Published**: 2026-05-09 14:32:06
- **ID**: 81152
- **URL**: https://whisperx.ai/en/intel/81152