The chaos ransomware group listed ellison-mills.com on its data leak site on 2025-09-01. Country: US Sector: Other Domains named: ellison-mills.com Claim as published on the leak site: Ellison-Mills Contracting is a family-oriented company specializing in wet utility and roadway infrastructure in Southern Arizona. They are committed to cultivating strong relationships with clients and team members while delivering quality construction management for various project types. With extensive experience in multimillion-dollar projects, the company prides itself on its ability to complete work on time and under budget across several contracting methods.