Linux is an o/s that is used by IT literate people and that alone will protect anything within reason.
You have heard of pebkac I am sure. You have to at least give windows some leeway due to the number of users that self inflict and not know or understand what it is they do that annoys us.
If and only if it gets into mainstream use then there will be a few headaches for Linux as well..
Linux has a lot going for it to reduce the ongoing problems of viruses but they cannot reprogram users. Maybe Linux should stay as it is so we can have an o/s to use without hassle.
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