Webroot's antivirus detection is powered by Sophos®, known globally as a pioneer and industry leader in the fight against viruses. This leading technology has been awarded the Virus Bulletin 100 Award 39 times. No other major antivirus provider has done better!* Webroot Spy Sweeper is the industry leader in antispyware protection and the most award winning. Our technology has been proven by independent testing to find and remove 40% more spies than any other antispyware software.