Mann Group
bd_22d37a94767bb46b · schema v1 · pii pii-v2
Full breach record for Mann Group →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
manngroup.com.au Mann Group is an Australian multi-disciplinary engineering and construction company founded in 1992 in Sydney, operating through eight subsidiaries including Mechtronic Engineering, Mann Fab, Mann Energy, Mann Enviro and Mann Solar. With 350 plus employees, it is Australia's leading provider of thermal, electrical, environmental and sanitary engineering solutions. The group covers pipe fabrication, structural steel, pressure vessels, industrial boilers, HVAC, waste-to-energy and renewable energy systems. Its headquarters and central workshop are located in Milperra, Sydney, with a financial year ending in June.
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Incident timeline — mostly unverified
? — ?
Breach window unknown
Oct 26, 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.