Leighton — Ransomware Incident Claimed by World Leaks
- Victim: Leighton
- Claimed by World Leaks
- Date claimed: 2026-03-27
- Country: AU
- Sector: Construction
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.