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    There is a great answer to this (the first to the question) programmers.stackexchange.com/questions/81624/… Commented Oct 12, 2012 at 10:17
  • Attacks and exploits can happen at all levels. If I write a vulnerable PHP script, it can be exploited regardless of the underlying OS, let alone hardware. Commented Oct 12, 2012 at 10:48
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    Found a great book on the topic: the Elements of Computing Systems: Building a Modern Computer from First Principles Noam Nisan, Shimon Schocken. A talk by Mr. Schocken on this approach: youtube.com/watch?v=IlPj5Rg1y2w&feature=plcp Commented Oct 12, 2012 at 15:04
  • Back in the days of dos, using assembly language for VGA graphics routines was about the only way to get any performance but I suppose I did not know what I was doing! But in the last 10 years or more of my career I have not had to look at anything so low. And I am now mostly ignorant to what happens at those levels. Rarely I even need to allocate or clean up my own memory. I suspect many in my team don't know what a stack is! In many ways it is not productive to code at such a level, reinventing the wheel so to speak. Rather we stand on the shoulders of giants. Commented Oct 13, 2012 at 20:24
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    There is no question in this post. Commented May 2 at 21:10