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Homestead Museum

sinobi

This record tracks a ransomware attack claimed by the sinobi group against Homestead Museum. It collects the publicly disclosed attack details — sector, location and timeline — as published on the operator's leak site and indexed by Breach House.

Window Zero

EXPOSURE GAP

Window Zero is the time the breach stayed in the open before anyone said so — the gap between when the attack was first discovered on the operator's leak site (t1) and when it was publicly disclosed (t2). The wider this window, the longer victims, staff and customers were exposed with no warning.

-49days
t1 · Published t2 · Disclosed
Nov 23, 2025Oct 06, 2025
Country
United States
Business Category
Communication / Marketing
Employees
0-50
Discovered
2025-11-24
Published
November 23, 2025
Disclosed / Notified
Oct 06, 2025
Victim ID
YECo2BNqxpwm

Attack Summary

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.

Leak Screenshots

SAMPLE

Proof-of-breach screenshots the operator posted from the stolen data. Previews are redacted and locked — the originals are available on HaveIBeenRansom.

file_tree.png
finance_2024.xlsx
passport_scan.jpg
contract_signed.pdf
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Dark Web Exposure

Findings for homesteadmuseum.org — indexed by HaveIBeenRansom.
0
found in Infostealer logs
94
found in Traditional breaches
2
found in Ransomware leaks
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+ 4 more leak sources locked
Leak volumes are locked
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Visit Website Original Post View Group: sinobi
Legal Disclaimer: This ransomware victim record reflects information published on the operator's leak site. Breach.house does not acquire, download, host, access or redistribute unlawfully obtained data. It indexes only publicly visible information posted by ransomware, breach and infostealer operators and open web sources, without accessing the underlying stolen content. The service supports public awareness, legitimate research and cyber-resilience.