Overview: McAfee® VirusScan® for Mac version 8.5 Beta is a Universal Binary which runs natively on both Intel and PPC based Macintosh computers. It can be managed by McAfee ePolicy Orchestrator® for scalable security policy compliance and graphical reporting. It includes true On Access scanning and supports scanning of Apple Mail messages on Mac OS X Tiger (10.4.0 & above) Notes: - Universal Binary VirusScan for Mac 8.5 beta is the first universal binary version in the Virex product line. VirusScan for Mac will run on both Intel- and PowerPC-based Mac computers natively. - On Access scanning VirusScan for Mac 8.5 beta features True On Access Scanning. It scans every file being accessed from or written to the machine and blocks infections if any. On Access Scanner can be configured to scan on Read Only, Write only or both. It can also be configured to scan files on network volumes. - 5100 engine support Support for the latest McAfee Anti-Virus engine. - Apple Mail scanning VirusScan for Mac 8.5 beta scans Apple Mail messages for any infections. This feature is available through both On Demand Scanner and On Access Scanner. Source: https://secure.nai.com/us/enterprise/downloads/beta/beta_mcafee/vsmac/vsmac.html