The dragonforce ransomware group listed Strafford County NH on its data leak site on 2025-06-16. Country: US Sector: Government & Defense Domains named: www.strafford.nh.us Claim as published on the leak site: Strafford County is a county in the U.S. state of New Hampshire. As of the 2020 census, the population was 130,889. Its county seat is Dover. Strafford County was one of the five original counties identified for New Hampshire in 1769.