My son received his new Dell laptop today in preparation for college next month. Windows 8 is the o/s and it came pre-installed with Windows Defender. I know the updated version of WD is said to be very much improved over the older version, but I know also that there are other options for anti virus, free versions, that work as well as paid ones. Opinions are like, well, we all know the answer to that, but still, is WD a sufficient AV program for his laptop? One thing I should mention is that with the purchase of this laptop through the college it comes with 24/7 tech support from the college, so I don't believe that installing a free anti virus would affect that in any way. Thanks for any replies.