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Leighton

worldleaks

This record tracks a ransomware attack claimed by the worldleaks group against Leighton. 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.

174days open
t1 · Published t2 · Pending
Mar 11, 2026Not disclosed yet
Country
United Kingdom
Business Category
Construction / Real Estate
Employees
+1000
Discovered
2026-03-27
Published
March 11, 2026
Disclosed / Notified
Not disclosed yet
Victim ID
dLLJTCjfwsBa

Attack Summary

[AI generated] Leighton is a multinational construction company, based in Australia, known for undertaking major construction, infrastructure, telecommunications and engineering works around the world. It was previously known as Leighton Contractors, prior to its rebranding as CIMIC Group in 2015. Some of its notable projects include large-scale building, infrastructure, and civil & mining projects globally.

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 leighton.com — indexed by HaveIBeenRansom.
1
found in Infostealer logs
581+
found in Traditional breaches
5+
found in Ransomware leaks
limeleads_breach.7z
TheUnderground - Reborn · breach
••• emails
Apollo.io DB 816millions.rar
Database World ROC · breach
••• emails
pureincubation-com.7z.001
Database World ROC · breach
••• emails
VerificationsIO_BF.7z.011
Kedr | Forum 🪾 · breach
••• emails
OnlinerSpambot_BF.7z
B F R e p o V 3 F i l e s · breach
••• emails
Database World ROC · breach
••• emails
B F R e p o V 3 F i l e s · breach
••• emails
Database World ROC · breach
••• emails
+ 17 more leak sources locked
Leak volumes are locked
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Visit Website Original Post View Group: worldleaks

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