Symantec's 2010 offering has long been our recommended security suite, and for 2011 the company has made only minor tweaks.The only conspicuous difference is the front-end, which now shows a live map of world malware hotspots - intended, perhaps, to emphasise the value of security software. Below this, new buttons connect directly into the company's separate parental control and online backup services, tying the various Norton offerings more cleanly together. You can check websites and perform "safe" web searches from within the interface too.
In terms of malware protection, Symantec says it's beefed up its behavioural and reputation-based scanning, but the results we saw were in line with last year's package. That's no bad thing, though. The 2010 package topped our last Labs with a 98% malware detection score, and its successor kept up an impressive 97% against this month's batch. Independent testing agency AV-Test saw similar results, giving Norton Internet Security 2011 a 98% score for detection.
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http://www.pcpro.co.uk/reviews/software/361192/norton-internet-security-2011