The deadlock ransomware group listed EXPRESOKNA SP. Z O.O. on its data leak site on 2026-07-10. Country: PL Sector: Professional Services Domains named: expresokna.pl Claim as published on the leak site: EXPRESOKNA SP. Z O.O. a Polish manufacturer and distributor specializing in window and door systems. Based in Siemianowice Śląskie, the company is known for its exceptionally fast turnaround times for PVC and aluminum products.