system
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As for websites there is something of an option for you.
I use Norton DNS (it’s free). Sites are run through their servers first before loading on your computer.
http://nortondns.com/
From Norton:
“There are thousands of infected and fraudulent Web site lurking on the Internet, with new ones popping up daily. So how do you know if a site is safe to visit or a dangerous site that should be avoided? Simple. Use Norton DNS. It automatically blocks dangerous Web sites so you can surf the Web without worrying about getting infected or scammed.
Norton DNS - a safer and smarter way to surf the Web.”
Clear Cloud does the same thing as I understand it.
http://clearclouddns.com/