Microsoft is the only antivirus software provider for the Windows platform that: 1) Has a vested interest in keeping viruses off the O/S. 2) No vested interest in the continued existence of viruses. Everybody else is pretty much like a pharmaceutical company. There is a lot more profit to be had selling you pills and band-aids the rest of your life than actually curing the disease. Actually fixing the problem is not in their best interest. AFAICT this holds true for all of the platforms. Anybody profiting from the problem has a vested interest in the problem continuing to exist.