Greenbrook Engineering
thegentlemenThis record tracks a ransomware attack claimed by the thegentlemen group against Greenbrook Engineering. It collects the publicly disclosed attack details — sector, location and timeline — as published on the operator's leak site and indexed by Breach House.
Window Zero
EXPOSURE GAPWindow Zero is the time the breach stayed in the open before anyone said so — the gap between when the attack was first discovered on the operator's leak site (t1) and when it was publicly disclosed (t2). The wider this window, the longer victims, staff and customers were exposed with no warning.
Attack Summary
greenbrookengineering.com zoominfo.com/c/greenbrook-engineering/346757767 Greenbrook Engineering Services is a private, MBE-certified steel detailing and engineering firm founded in 2000, headquartered in Middlesex, New Jersey, with 5 offices in India (Bengaluru, Chennai, Nashik, Mysuru). It employs 350–756 people (mostly offshore in India) and generates estimated group revenue of $20–30M/year, with the India entity alone growing +22% YoY (₹25.3 crore FY2025). Over 25 years it has completed 3,000+ projects (Hollywood Burbank Airport, semiconductor fabs, Fiat Chrysler, military bases) with capacity of 50,000+ engineering hours per month. Core services: steel detailing, PE-stamped connection design, BIM coordination, and HVAC using Tekla/SDS2. It is the only steel detailing firm in the world with Great Place to Work certification and won Trimble's "Feature Company of the Month" (2025) and the NISD Detailing Edge Award (2026). Led by Chairman Mukul Mehta (Wharton PhD) and MD Vasan H.R.K.
Leak Screenshots
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