Symantec's Norton AntiVirus™ 2005 is the world's most trusted antivirus solution.¹ It removes viruses, worms, and Trojan horses automatically without interrupting your work. New Norton™ Internet Worm Protection blocks certain more sophisticated worms (such as Blaster and Sasser) before they enter your computer. Norton AntiVirus can also detect spyware and other non-virus threats. Internet Worm Protection stops certain damaging Internet worms at their attempted point of entry. QuickScan tool automatically searches for and removes viruses whenever new virus protection updates are downloaded. PreInstall Scan quickly detects and removes infections that can interfere with installing and launching Norton AntiVirus. Automatically removes viruses, worms, and Trojan horses. Scans and cleans both incoming and outgoing email messages. Blocks viruses in instant message attachments. Detects spyware and certain non-virus threats such as adware and keystroke logging programs. Scans compressed file archives before you open them and risk infecting your computer. (Available only on Windows® XP/2000 Pro.) Downloads new virus protection updates automatically to protect against new threats.² ¹ Top-selling antivirus software product from December 2000 through June 2004 based on The NPD Group's retail Top Selling Business Software months of protection updates included with purchase of Norton AntiVirus 2005; annual subscriptions available for subsequent updates.