This record tracks a ransomware attack claimed by the
coinbasecartel group against
OTEIS Conseil & Ingénierie. 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.
0days open
t1 · Published
t2 · Pending
Published
August 22, 2026
Disclosed / Notified
Not disclosed yet
Attack Summary
[AI generated] OTEIS Conseil & Ingénierie is a French engineering and consulting firm specializing in building and infrastructure design. Operating in France, the company provides technical expertise across disciplines including structural engineering, fluids, electricity, and project management. It serves sectors such as real estate, public works, and urban development, supporting both public and private clients throughout project lifecycle phases.
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.
Dark Web Exposure
Findings for oteis.fr
— indexed by HaveIBeenRansom.
21
found in Infostealer logs
593+
found in Traditional breaches
8+
found in Ransomware leaks
DUMP ULP 07.07.2026 Base34 2.txt
Database World ROC · breach
••• emails
Apollo.io DB 816millions.rar
Database World ROC · breach
••• emails
DUMP ULP 07.07.2026 Base34 3.txt
Database World ROC · breach
••• emails
@BreachedData1 LinkedIn 2021-23 Cleaned.7z.001
Database World ROC · breach
••• emails
Cit0day [cit0day.in] breaches.csv
LKnet reserve chat · breach
••• emails
PeopleDataLabs_416M.json.7z.00001
Leaks Aggregator @sqan7 · breach
••• emails
limeleads_breach.7z
TheUnderground - Reborn · breach
••• emails
Full Clouds Cit0day_2.7z.001
DBs w MTDT · breach
••• emails
+ 17 more leak sources locked
Leak volumes are locked
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Legal Disclaimer:
This ransomware victim record reflects information published on the operator's leak site.
Breach.house does not acquire, download, host, access or redistribute unlawfully obtained data. It indexes only publicly visible information posted by ransomware, breach and infostealer operators and open web sources, without accessing the underlying stolen content. The service supports public awareness, legitimate research and cyber-resilience.