DESC: Symantec's Norton AntiVirus 2005 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. The new QuickScan tool automatically searches for and removes viruses whenever new virus protection updates are downloaded. An enhanced PreInstall Scan quickly detects and removes infections that can interfere with installing and launching Norton AntiVirus. Norton AntiVirus also scans and cleans both incoming and outgoing email messages and blocks viruses in instant message attachments. Other powerful features scan compressed file archives before you open them and risk infecting your computer (this feature works with Windows XP and 2000 Pro only). You'll also be safe from spyware and certain non-virus threats such as adware and keystroke logging programs.A renewable twelve month subscription of protection updates is included.