Why is it that windows and Unix have those lovely built in features for hackers to use such as on windows you can use ms dos prompt to connect to someones computer and from there you pretty much have complete control...im not to sure on how Unix stuff works but resources are available to learn it. Why is it that on mac os 9.x or below(not sure about os x cuz its unix based) i can not find a built in feature such as DOS or Unix?