Tony Porterfield for The New York Times

Tony Porterfield poses for a portrait in his home in Los Altos, California, Wednesday, February 4, 2015. Tony Porterfield, a software engineer and father of two boys, in the past found security flaws in the web sites and apps used in his sons' elementary school and has since then  identified security lapses in a couple of dozen other K-12 education technology products. Here the story here.