The moment that happens I will switch over to Linux. I know Linux isn't exempt from having rootkits and malware, but Linux evolves so quickly that the rootkit authors couldn't keep up. Or the company dumb enough to hire people to make them wouldn't be able to afford it. It's much easier to make ransom-ware when 90% of the people are using Windows. I'd like to see them try that on Mac. I'm sure the Apple lawyers would love it.