Museum Siam
bd_b3938f096253e948 · schema v1 · pii pii-v2
Full breach record for Museum Siam →Threat-actor claim — not a regulatory filing
This row is a claim by the ransomware group Thegentlemen 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
museumsiam.org Museum Siam museum in Bangkok run by NDMI under the public organization OKMD — the .org domain is real, but it's a government institute, not a private company. It occupies the former Ministry of Commerce building (1921–1922) and opened as a museum on 2 April 2008. The core exhibit Decoding Thainess (14 rooms on how Thai identity was formed) has run since 2017; there's also a free Underground Museum at MRT Sanam Chai (2020). Attendance is ~250–343K per year (different counting methods), 3.8M over 17 years; museum-level revenue isn't disclosed — finances publish only at OKMD level. Tickets: 100 THB adult, 50 students, free for kids under 15, 60+, monks, disabled visitors; open Tue–Sun 10:00–18:00. Beyond exhibits: a 4,000+ resource library, digital archives, venue rental (5–80K THB), and a nationwide museum-network support program.
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Incident timeline — mostly unverified
? — ?
Breach window unknown
Oct 14, 2026
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.
thegentlemen
According to ransomware.live, The Gentlemen is a RaaS group that emerged in July–August 2025, rapidly claiming over 320 victims across 17+ countries by offering affiliates a 90% revenue share, deploying a Go-based locker against Windows, Linux, NAS, and BSD systems; a compromised C2 server in 2026 revealed more than 1,570 linked victims.