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HMH (hmhco.com)
Claimed victim
1 group·1 claims·2025-10-03
Claimed by
2025-10-03
Over 5.3M+ records of Personally Identifiable Information (PII) have been compromised.
Record Count:
- 1727290 hmh_account_1751923310.1411371.jsonl
- 3672400 hmh_contact_1751923596.513013.jsonl
- 38313 hmh_user_1751970537.32384.jsonl
We possess:
- Full Name
- Email Address
- Phone Number
- Residence Addresses
- Teacher/Student Contact Information
- School Informati
Groups publish these on their own leak sites. A claim is not a confirmed breach — treat every entry as an assertion, not a fact.