Personally, I use Linux. And even in Linux, I try not to believe that I'm 100% safe. Its just not a good policy, I've learned that in the few years that I'm alive.
This is true. The only 100% secure computer is one you build and code the OS for yourself, and keep off networks.
any os will and always will.
anything that man makes ALWAYS will.
some things wont. Ex.) Gravity.
anyway when it comes down between mac and alienware, go wit what you want/like
more than what other people prefeer, especially wen they are that close in hardware
together.