The Internet in China is censored by set of measures often referred to as the Great FireWall (GFW). It is arguably the most sophisticated censorship system in the world. It has therefore been studied enough, but rarely in so much detail as in the excellent article "How Great is the Great Firewall? Measuring China's DNS Censorship", the authors of which have monitored the GFW over a long period…
The Internet is vulnerable to attacks, hardware failures, software bugs. But it can also be vulnerable to the actions of the Sun, as the study "Solar superstorm: planning for an Internet apocalypse" shows which, despite a catchy title, is a serious and detailed analysis of the risks that the Internet will run with the current increase in the violence of the Sun…
An exciting discussion on the NANOG list has just focused on "gray" failures. What is a gray failure in computer networks?…