McAfee Internet Security 2013 is one of the best Internet Security Suites available. And if you are looking for a Free full version license, here is one you can get.
High speed scanning engine
Digital Data Shredder
Read more about the product here
If you want to get a free full version license of Free McAfee Internet Security 2013.
Get the promotional link from here
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You need to have a McAfee account (or you can create one)