The key differences between natural systems and computer systems is that vulnerabilities don't kill a piece of software, and there's no interbreeding. You don't

The key differences between natural systems and computer systems is that vulnerabilities don't kill a piece of software, and there's no interbreeding. You don't get two types of emacs, one of which has a buffer overflow, breeding to produce a new emacs without the bug. You get top-down design, where the 'many eyes' theory dictates that new vulnerabilities should be found faster in a more popular code-base. Evolutionary theory is useless for describing software vulnerabilities (presently), because the software on your computer doesn't get to pass on it's genes, hacked or not. It's a clone of every other download from the same source, and they're all systematically replaced by a new release with minimal feedback.