Team Group
bd_b53a04903127fcd7 · schema v1 · pii pii-v1
Full breach record for Team Group →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
TEAM GROUP is one of the leading integrated consulting firms in Thailand and region with more than 40 years of experience in comprehensive consulting services in the areas of Building and Infrastructure, Water Resources, Environmental Management, Transport and Logistics, as well as Power and Energy. TEAM GROUP has accomplished more than 2,500 projects in Thailand and overseas including the Xayaburi Hydroelectric Power Project, Suvarnabhumi Airport, Government Complex, and MRT Blue Line Extension. company is headquartered in TEAM Building, 151 Nuan Chan Road, Nuan Chan, Bueng Kum, Bangkok 10230 Thailand 1028 Employees. The total amount of data leakage is 2.25 TB
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Incident timeline — mostly unverified
? — ?
Breach window unknown
Sep 1, 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.
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.