Houghton Mifflin Harcourt Company
bd_2f023c52ecbc60e0 · schema v1 · pii pii-v1
Full breach record for Houghton Mifflin Harcourt Company →Threat-actor claim — not a regulatory filing
This row is a claim by the ransomware group ALPHV / BlackCat on its public extortion blog. It has not been validated by the victim or any regulator. Treat attribution and counts as the threat actor's assertion until a regulatory filing or victim disclosure corroborates them.
Source: Ransomware.live
Post text · scraped from the leak site
Founded in 1944, Kendall Hunt Publishing is a publisher of hands-on, inquiry-based science, mathematics, and gifted curricula for grades PreK-12. Their research and standards-based programs are available in both print and digital components that encompass students
Source provenance
- Source URL
- https://www.ransomware.live/id/S2VuZGFsbCBIdW50IFB1Ymxpc2hpbmdAYWxwaHY=
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
- Filed at
- Feb 22, 2023
- Raw hash
- 14b1b93b6c7808a89e7bfabdbe007b6de41fca94d4a4e8483ecee6a0a86207fa
Reporting entity
- Name
- alphv
Victim entity
- Name
- Houghton Mifflin Harcourt Companynorm: houghton mifflin harcourt
- Domain
- hmhco.com
- Industry
- Educationllm
What this source establishes
- Source ceiling
- A leak-site claim can't tell us: discovery date · materiality · notification · affected count · confirmed data types · compliance clock. These stay blank until a regulatory filing or victim disclosure lands.
- Attack vector
- Ransomware· alphv
- Threat actor
- ALPHVExternalFinancial
Compliance
- Compliance flags
- — (clock not assessable for this source)
Extraction provenance
- Status
- No extraction artifact recorded for this disclosure.