The sinobi ransomware group listed Ganther Construction on its data leak site on 2025-10-14. Country: US Sector: Manufacturing Domains named: ganther.com Claim as published on the leak site: Established in 1979, GCI is headquartered in Anchorage, Alaska. They are a telecommunications provider with services including internet, mobile, TV, and more. As Alaska's largest telecommunications provider, they're committed to bridging the digital divide in the most remote communities in the world by investing in connectivity solutions that empower all Alaskans to live more connected lives.