gAtO wAs mOnItOrInG – bad ToR-Relays and found that during this unrest in Iran and Syria. We have 17 bad ToR-Relays 95% in Iran and Syria. This is how the shut down the network to suppress information communication securely to the outside world. Time stamp is 05-31-2012 00:52:05 MET.
Tor Network Status – http://torstatus.blutmagie.de/index.php you can find all kinds of information about the .onion relays that make up the networks.
Swedish researchers have discovered that Chinese officials have updated the country's 'Great Firewall' to make it harder for citizens to use the Tor network that provides a means of surfing the web anonymously.
It has been long-known that the 'Great Firewall Wall of China' has attempted to block citizens from using the Tor network, by blocking access to some IP addresses or using HTTP header filters to weed out suspect traffic.