MATTEK PTY LTD
bd_4d4c75c275c0b246 · schema v1 · pii pii-v1
Full breach record for MATTEK PTY LTD →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
***.com zoominfo.com/c/mattek-corp/109184324 MatTek Corporation is a pioneering biotechnology company founded in 1985 and headquartered in Ashland, Massachusetts, specializing in the development of innovative in vitro 3D reconstructed human tissue models. They produce advanced microtissues and cell culture products that are widely used by researchers to accelerate drug development, conduct toxicity testing, and replace traditional animal testing. Originally an independent leader in tissue engineering, the company was recently acquired by the global life science supplier Sartorius and now operates as a key part of their advanced biological models portfolio
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Incident timeline — mostly unverified
? — ?
Breach window unknown
Jul 23, 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.