I offered a simple opinion about what I thought the answer to the question posed in the original posting should be.
I would never expect that every doctor to become an IT professional (I am not) but a basic understanding of concepts like password security, wireless/wired networks, client/server OS, and safe internet practices need to be a part of the physician knowledge base. Just like basic business skills are necessary to run a practice, basic IT skills will be necessary in the future as our profession moves to a more EMR structure. And where I work in a large group practice I am able to defer the business aspects to others but I still need to know the basics about accounts receivable, proper employee relations, OSHA, etc. That is what I meant to say. I hate the business aspects of medicine that detract me from the work of practicing medicine just as much as some hate the IT stuff. However I still need to know it and deal with it. (I would point out that you would need far more business know-how than IT know-how)
Perhaps the comment I made about basic IT knowledge being assessed was a little too much. I have got to quit posting things when I am tired,
There is certainly no end to the layers of security that a person can deploy. Everyone will have to make that judgement for themselves how many layers they need to have. For me those layers for wireless security are a domain set up with 802.1x auth. For others it will be different.
I certainly will chime in on those topics that I think that I can help with.