Here at security-faqs.com I write plenty about the need to properly protect your PC.
You can do that primarily by educating yourself by reading the articles here but it is also important to install security software from a reputable vendor.
One such company is McAfee whom I am sure you must have already heard of.
If you want to purchase your security software from one of the big boys then McAfee should be one that you consider.
And now may be the time to take the plunge as they are currently offering a couple of massive 50% off deals -
Save $45 on McAfee Total Protection – the ultimate protection against virus, online and network threats. Click Here
Save $40 on McAfee Internet Security –Comprehensive protection against virus and online threats.
I haven’t reviewed either product (yet) to be honest but McAfee certainly falls into the category of reputable brands.
If you are still shopping around then you may wish to check out my 2011 antivirus reviews and if you are ready to buy then take the time to find out if I have any antivirus / internet security coupons which could save you money.