McAfee VirusScan 3.x DAT File is the latest data files for updating McAfee VirusScan 3.x products. This DAT file is compatible with VirusScan's v3.x engines only. It is not intended for use with the VirusScan v2.5x series. It can be used to update Netshield, VShield, WebScan or any of the VirusScan programs with the latest virus definitions.