The global ransomware group listed Shanghai Tunnel Engineering Co Ltd on its data leak site on 2026-08-28. Country: CN Sector: Transportation Domains named: www.stecs.com.sg Claim as published on the leak site: STECS is a leading civil engineering and construction company in Singapore, specializing in rail transit and underground projects. It has completed over 30 major projects for key clients like the Land Transport Authority and Public Utilities Board. The company prioritizes safety, environmental responsibility, and improving urban infrastructure in Southeast Asia.