answer:There is no such thing as the best antivirus software, just like there is no best search-engine, it’s entirely up to you: do you want a simple interfce, or is it more for the protection, do you wants to pay for it, or would you like you get it free. We only can give you recommendations. I am using NOD32 becuase of it’s powerful engine and low-memory usage. I previously used Avast Home Edition, but it had too little features. I also heard that Kaspersky is very good, but whatever you do: never use Norton! It’s like the viruses are attracted to Norton :-) Your PC is getting sloooower and slooooooooooower, and finally out of despiration, you install an other antivirus, and you bought Norton for nothing! Also, you could google “antivirus” to test some. If one suits your needs, buy it, or download it if it’s a freebie. Good luck. P.S. You could also switch to a Mac, there are no viruses for Mac’s. :-)