Abstract: An anti-virus protection system and method for use within a data transmission network to protect against the transfer of viruses from a transmission originator having a discrete transmission originator code to a subscriber/recipient having a discrete subscriber/recipient IP address code over the data transmission network comprising the steps of assigning a discrete security code to the transmission originator, generating a transmission pack including a discrete subscriber/recipient IP address code element corresponding to the discrete subscriber/recipient IP address code of the subscriber/recipient, a discrete security code element corresponding to the discrete security code assigned to the transmission originator, a file extension element and a data packet element; transmitting the transmission pack to a data transfer control; authenticating the transmission pack with the discrete subscriber/recipient IP address code element, discrete security code element and discrete transmission originator code; transferr