The qilin ransomware group listed Sprague & Jackson on its data leak site on 2025-10-16. Country: US Sector: Financial Services Domains named: www.sprjac.com Claim as published on the leak site: Sprague & Jackson, USA - Sprague & Jackson is a tax services firm that offers a range of client services including secure document submission and payment options. They provide personalized assistance through scheduled meetings to help clients ...