Norton AntiVirus 11 for Mac is the #1 selling antivirus solution for Macintosh users. Dual Protection includes Norton AntiVirus 2008 for Windows to protect those who use their Intel based Mac to run Mac OS X and Windows operating systems. AntiVirus 11 works with Leopard, Mac's latest operating system and includes internet worm protection. AntiVirus 11 Features Automatically detects and removes viruses—Offers automatic protection against the latest threats with set-and-forget convenienceScans and cleans downloaded files and email attachments—Delivers continuous, up-to-date protection via fast updatesProtects against attacks that target software vulnerabilities—Provides advanced protection against software and Internet vulnerabilitiesWorks with new Mac OS X v10.5—Runs natively on Intel and PowerPC based Mac systemsIncludes an all-new Norton AntiVirus dashboard widgetDelivers industry-leading protection in the background, so you can work and play without any noticeable impact on performance Norton AntiVirus