User crippled a network while trying to learn Nmap

WHO, ME? Welcome to the working week, dear reader, which as always we open with a fresh instalment of “Who, Me?” – the reader-contributed column that offers an education in how not to do things at work. This week, meet a reader we’ll Regomize as “Roger” who told us that a decade or so back he managed teams that designed electronic shop tools and associated test kit. Roger admits he had begun to find the job a little boring, and so he sometimes found himself ex