jjp9999 writes "Weibo, China's replacement for Twitter and Facebook, went offline for about two hours on Jan. 20, when a DNS attack switched its IP address to overseas VPN software used to circumvent censorship. On Jan. 21, the brief IP switch was the most discussed topic on Weibo, with one user, ITHome, saying posting 'What IP is 18.104.22.168? It's sure to go down in history.' The IP address is one of those used by Freegate, which is free software released by Chinese dissidents in the U.S. intended to help Chinese people break through the Great Firewall. However, Bill Xia, president of Dynamic Internet Technology, which makes Freegate, said he and his team of volunteers thought their networks were under attack when they got a surge of traffic with about 100,000 users a second hitting their IP address. Xia said they are still trying to analyze the incident, but he assumes it was a slip-up [on the part of] the Chinese authorities in charge of censoring content. 'Our guess is they messed up again,' he said. 'This doesn't make sense for them, so I assume it was a mistake in their operation.'"