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Stewart Engenharia

thegentlemen

This record tracks a ransomware attack claimed by the thegentlemen group against Stewart Engenharia. 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 GAP

Window 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.

244days open
t1 · Published t2 · Pending
Dec 30, 2025Not disclosed yet
Country
Brazil
Business Category
IT
Employees
51-100
Discovered
2025-12-30
Published
December 30, 2025
Disclosed / Notified
Not disclosed yet
Victim ID
Y9qDJWzWsX8k

Attack Summary

www.stewartengenharia.com.br https://www.zoominfo.com/c/stewart-engenharia/546688997 Stewart Engenharia specializes in high-standard constructions and renovations, providing exceptional project development and execution services since 1995. The company is committed to making clients' visions a reality with a focus on sophistication, style, technology, and innovative solutions. With a highly trained team, they cater to the specific demands of discerning clients, offering personalized service. Their portfolio includes the development of refined projects for houses, apartments, offices, and commercial spaces.

Leak Screenshots

SAMPLE

Proof-of-breach screenshots the operator posted from the stolen data. Previews are redacted and locked — the originals are available on HaveIBeenRansom.

file_tree.png
finance_2024.xlsx
passport_scan.jpg
contract_signed.pdf
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Dark Web Exposure

Findings for stewartengenharia.com.br — indexed by HaveIBeenRansom.
2
found in Infostealer logs
199+
found in Traditional breaches
0+
found in Ransomware leaks
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TAPAir_BF_.7z.001
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TAPAirPortugal_BF.7z
B F R e p o V 3 F i l e s · breach
••• emails
TAPAirPortugal_BF.7z
TheUnderground - Reborn · breach
••• emails
Portugal-flytap.com-National-Airline.zip
Database World ROC · breach
••• emails
Anonymous Russia БД · breach
••• emails
B F R e p o V 3 F i l e s · breach
••• emails
Database World ROC · breach
••• emails
+ 13 more leak sources locked
Leak volumes are locked
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