Foreword

My great-grandfather was a furniture maker. I am writing this on his table, sitting in his chair. His world was one of craft, “the skilled practice of a practical occupation.”¹ He made furniture late in life that was in superficial respects the same as that which he made earlier, but one can see his craft advance.

1. “WordNet Search—3.1,” Princeton University, 2011. http://wordnetweb.princeton.edu/perl/webwn.

Cybersecurity’s hallmark is its rate of change, both swift incremental change and the intermittent surprise. In the lingo of mathematics, the cybersecurity workfactor is the integral of a brisk flux of step functions punctuated by impulses. My ancestor refined his craft without having to address a change in walnut or steel or linseed. The refinement of craft in cybersecurity is not so easy.