Software The file transmission method that uses a secure Internet (HTTPS) communication system which enables taxpayers to transmit tax return, report and/or payment files to the Department electronically. SecureNet is managed by BSWA, the Department's EDI service provider. Taxpayers who develop their own filing software to generate return, report and/or payment files will use SecureNet or FTP as their method to transmit their return, report and/or payment files.