San Jose Country Club
bd_aea6296ce25aa90a · schema v1 · pii pii-v1
Full breach record for San Jose Country Club →Threat-actor claim — not a regulatory filing
This row is a claim by the ransomware group Medusa 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
San Jose Country Club is a premier family-friendly private golf club located in Northern California, established in 1899 and known for its rich tradition. The club offers year-round golf, dining options, and various social activities, making it a sought-after destination for members in the Bay Area. It features a newly remodeled clubhouse and event facilities for hosting weddings and special events. Catering to golf enthusiasts and families alike, the club emphasizes superior service and exclusive dining experiences. company is headquartered in 15571 Alum Rock Ave San Jose, CA 95127 The total amount of data leakage is 117.5 GB
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Incident timeline — mostly unverified
? — ?
Breach window unknown
Jun 9, 2025
Claim posted
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Corroborated · see linked filings
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
Linked disclosures
Why this link?Regulatory filings (1) · sorted by filing gap
- Massachusetts State AGbd_6f76110db37f7da62025-08-08 · +59dVerified by operator
Filing propagation · 2 filings
View merged incident ↗Pattern: first filing Jun 9, last Aug 8 (MA) — a 59-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?
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.
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.
medusa
According to ransomware.live, Medusa is a ransomware-as-a-service operation active since June 2021 that has targeted over 300 victims across critical infrastructure sectors including healthcare, education, legal, and manufacturing using double-extortion, with attacks surging 42% between 2023 and 2024 and a formal CISA advisory issued in early 2025.