Links for January 2017

A good explanation of the three level of "stopping" a service in systemd, with a focus on masking.
«This post describes my fruitless effort to convince Microsoft employees that Their service is vulnerable, and the humiliation one has to go through should One’s account be blocked by a hacker. This is a story of ignorance, pain and Despair.»
«You’re looking at a map of all of the shadows produced by thousands of buildings in New York City over the course of one day. This inverted view tells the story of the city’s skyline at the ground level.»