Hacker News on 23 April 2017

• How SSH got port number 22
• Uber CEO Plays with Fire
• The Guardian Pulls Out of Facebook’s Instant Articles and Apple News
• Want to rescue rural America? Bust monopolies
• Fewer mallocs in curl
• Thousands of computers now compromised with leaked NSA tools, researchers say
• Stanford Lecture Notes on Probabilistic Graphical Models
• Show HN: Timestrap – Self-hosted online time tracking
• OpenLara – Web-based classic Tomb Raider engine remake
• Websites people say have changed their lives