Norton AntiVirus 是一套强而有力的防毒软件，它可帮你侦测上万种已知和未知的病毒，并且每当开机时，自动防护便会常驻在System Tray，当你从磁盘、网路上、E-mail 夹档中开启档案时便会自动侦测档案的安全性，若档案内含病毒，便会立即警告，并作适当的处理。另外它还附有「LiveUpdate」的功能，可帮你自动连上 Symantec 的 FTP Server 下载最新的病毒码，於下载完后自动完成安装更新的动作。

诺顿杀毒软件的病毒库升级程序，适用于32位Windows平台的诺顿旧版本系列产品:
Norton AntiVirus 2003 Professional Edition
Norton AntiVirus 2003 for Windows 2000/XP Home/XP Pro
Norton AntiVirus 2004 Professional Edition
Norton AntiVirus 2004 for Windows 2000/XP Home/XP Pro
Norton AntiVirus 2005 for Windows 2000/XP Home/XP Pro
Norton AntiVirus 2006 for Windows 2000/XP Home/XP Pro
Norton AntiVirus 2007 for Windows XP Home/XP Pro/Vista
Norton 360 version 1.0 for Windows XP/Vista
Norton AntiVirus for Microsoft Exchange (Intel)
Norton SystemWorks (all versions)
Symantec AntiVirus 3.0 for CacheFlow Security Gateway
Symantec AntiVirus 3.0 for Inktomi Traffic Edge
Symantec AntiVirus 3.0 for NetApp Filer/NetCache
Symantec AntiVirus 9.0 Corporate Edition Client
Symantec AntiVirus 10.0 Corporate Edition Client
Symantec AntiVirus 10.1 Corporate Edition Client
Symantec AntiVirus 10.2 Corporate Edition Client
Symantec Mail Security for Domino v 5.x
Symantec Mail Security for Microsoft Exchange v 5.x