The blackbyte ransomware group listed CPTM on its data leak site on 2022-12-29. Country: BR Sector: Transportation Domains named: cptm.sp.gov.br Claim as published on the leak site: The São Paulo Metropolitan Train Company is a commuter rail system owned by the Secretariat of Urban Transportation of the State of São Paulo. It was created in 1992 with the merger of several railways in Greater São Paulo, Brazil.