As a gratis or free anti virus, Smadav has proven itself as the best portable anti virus, it is not also secure you computer but also does not make your computer heavy.
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Smadav is always free and has been used by Millions of people around the world, it is the most secure anti virus. Anyway, for the internet security problem, unfortunately you cannot rely Smadav, you should use the additional anti virus like Norton Internet Security 2013 to protect your internet connection from cyber crime.
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