This record tracks a ransomware attack claimed by the
worldleaks group against
The Gisborne Group. 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.
2days
t1 · Published
t2 · Disclosed
Business Category
Communication / Marketing
Disclosed / Notified
Jul 01, 2025
Attack Summary
[AI generated] "The Gisborne Group" is a privately-held construction company founded in Canada. They provide services in industrial and commercial construction, design-build projects, commercial retail and office buildings, and multi-unit residential buildings. With an impressive portfolio of forward-thinking construction practices, they're known for their commitment to quality, safety, and project efficiency.
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 gisborne.com
— indexed by HaveIBeenRansom.
2
found in Infostealer logs
341+
found in Traditional breaches
13+
found in Ransomware leaks
pureincubation-com.7z.001
Database World ROC · breach
••• emails
VerificationsIO_BF.7z.011
Kedr | Forum · breach
••• emails
Apollo.io DB 816millions.rar
Database World ROC · breach
••• emails
contacts_82.csv
Database World ROC · breach
••• emails
contacts_80.csv
Database World ROC · breach
••• emails
limeleads_breach.7z
TheUnderground - Reborn · breach
••• emails
contacts_79.csv
Database World ROC · breach
••• emails
AntiPublic_BF.7z
B F R e p o V 3 F i l e s · breach
••• emails
+ 17 more leak sources locked
Leak volumes are locked
Sign in to reveal how many records each source exposed and the remaining 20 sources.
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.