Norton, one of the largest computer security companies in the world, has Norton Antivirus as its most popular and well-known product. With over a decade of research and development behind it, Norton Antivirus 2009 is one of the most effective and efficient antivirus application options available on the market. The newest version solves performance issues observed in its predecessors, resulting in an install time as short as 47 seconds, scanning time of as brief as 32 seconds and system memory usage as low as 5MB. Scan efficiency is improved with integrated technologies like Norton Insight, which flags user-specified programs as ’safe’ and therefore bypasses them for scans.

Norton Antivirus uses an approach with multiple layers of analysis and protection to better detect disguised threats and provide more comprehensive protection. The program is capable of detecting a wide range of malicious programs ranging from Trojans to worms to root kits, all of which tend to run unnoticed by the average user. Although the program already employs regular virus definition updating every 15 minutes, it also uses SONAR technology to identify even those threats that are yet to be identified and given a definition. And even if a malicious program were able to get past all of the security fences, Norton Antivirus has a lock down feature that prevents any changes to system critical software.

Price: 39.99$
Site: http://www.symantec.com/norton/antivirus

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