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C2O Architects

thegentlemen

This record tracks a ransomware attack claimed by the thegentlemen group against C2O Architects. 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.

117days open
t1 · Published t2 · Pending
May 06, 2026Not disclosed yet
Country
Belgium
Business Category
Construction / Real Estate
Employees
0-50
Discovered
2026-05-06
Published
May 06, 2026
Disclosed / Notified
Not disclosed yet
Victim ID
6Bx6Y2hhcuCS

Attack Summary

c2o-architects.be zoominfo.com/c/c2o-architects/451291685 C2O Architects (C2O-Architects bv) is a Belgian architectural and urban planning firm founded on June 29, 2000, headquartered at Nieuwstraat 26, Asse, Flemish Brabant, Belgium. The studio is led by Marnik Dehaen, who also serves as Chairman of the Flemish Council of the Order of Architects, and co-owned by Erna Polspoel. The firm works across a wide range — from small private renovations and residential expansions to large-scale public projects — with a multidisciplinary team that adds value through expertise in architecture, urban design, and spatial planning. A notable project includes the award-winning Asse Landform complex (2014), a regional fire station and youth center designed in collaboration with ORG Permanent Modernity

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 c2o-architects.be — indexed by HaveIBeenRansom.
0
found in Infostealer logs
6
found in Traditional breaches
0
found in Ransomware leaks
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••• emails
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B F R e p o V 3 F i l e s · breach
••• emails
Cit0day [cit0day.in] breaches.csv
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••• emails
LinkedIn.com.txt
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••• emails
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