This morning, GreatFire.org published a story stating that EdgeCast CDN, one of the more popular content distribution networks that handles content for a number of large websites, has been blocked by the Chinese national filter. As a result, a friend …
Of the various ways to filter the internet, manipulating DNS is probably the simplest and cheapest in terms of resources. DNS, the Domain Name Service, is the mapping between the human-readable URLs that we use, like https://www.pseudonymity.net, and the …
I recently presented my work on censorship mapping to my colleagues at the OII, including a couple of maps with early analysis of DNS manipulation in Chinese cities.
The analysis is very preliminary, and there are considerable caveats even …
This year saw the first workshop on Freedom of Communications on the Internet, co-located with USENIX Security in San Francisco. My contribution, co-authored with Ian Brown and Tulio de Souza, focused both on the means for mapping censorship in …
I was recently invited to speak at Dalian Technical University, in Liaoning Province in Northern China, and took the opportunity afterwards to spend three weeks travelling around China with my family. (Finally putting several years of studying Mandarin into practice, …
Another media story on China and the Internet has been widely reported today, although with a somewhat depressing lack of detail and excess of hysteria. I was interviewed today on the BBC about the story (my comments start around 01:34) …
