Homestead Museum
bd_8990f84f70108d67 · schema v1 · pii pii-v1
Full breach record for Homestead Museum →Threat-actor claim — not a regulatory filing
This row is a claim by the ransomware group Sinobi 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
The Homestead Museum is a Historic-Cultural Landmark located in the City of Industry, California, showcasing the history of Los Angeles from the 1840s to the 1920s. It offers a range of programs, including workshops and tours, aimed at educating visitors about local history and fostering advocacy for historical preservation. Ideal for families, students, and history enthusiasts, the museum provides engaging experiences such as storytelling sessions, crafts, and genealogy workshops. As a unique cultural resource, it invites visitors to explore its gardens, houses, and historical narratives.
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Incident timeline — mostly unverified
? — ?
Breach window unknown
Nov 23, 2025
Claim posted
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No filing yet · watching
Compliance clocks stay unassessable until a regulatory filing lands. Dashed segments fill in automatically when corroboration arrives.
Claim → filing
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Compliance clock
Not assessable
Evidence ladder
Attacker assertion only. Establishes: claim date, group, alleged victim.
Unlocks: incident narrative, operational impact. Still no compliance clock.
Unlocks: discovery date, data types, affected count, compliance clock.
Unlocks: materiality, stated response, full audit trail. Ceiling removed.
No regulatory filing corroborates this yet — it is the attacker's own assertion. Watch this entity to be notified the moment a filing corroborates or contradicts it.
Source ceiling
- actor name
- victim claim
- ransom/leak status
- discovery date
- materiality
- notification
- affected count
- confirmed data types
- compliance clock
The ✕ fields stay blank until a regulatory filing or victim disclosure lands.
sinobi
According to ransomware.live, Sinobi is a private vetted-affiliate RaaS group that emerged in mid-2025, believed to be a rebrand of the Lynx/INC ransomware lineage, claiming 176 victims by end of 2025 through double-extortion attacks primarily against mid-market US organizations via compromised SonicWall VPN credentials.