Norton AntiVirus, developed and distributed by Symantec Corporation, provides malware prevention and removal during a subscription period. It uses signatures and heuristics to identify viruses. Other features include e-mail spam filtering and phishing protection.
Symantec distributes the product as a download, a box copy, and as OEM software. Norton AntiVirus and Norton Internet Security, a related product, held a 61% US retail market share for security suites as of the first half of 2007. Competitors, in terms of market share in this study, include antivirus products from CA, Trend Micro, and Kaspersky Lab.
Norton AntiVirus runs on Microsoft Windows and Mac OS X. Version 188.8.131.52 is the latest Windows build. Windows 7 support is in development for versions 2006 through 2008. Version 2009 has Windows 7 supported update already. Version 2010 natively supports Windows 7, without needing an update. Version 11.1.1 is the latest Mac build.
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