About the security threat, I am certainly think they from state-sponsored attacks, as I know, there are lot of social activities , bloggers, Media practitioners,Especially foreign media practitioners and political dissents,all of them at risk of state-sponsored attacks. Authorities want monitor communications, lot of social activities report they face attacks, for example , Hu Jia reported his email was forward to another unknown email address, Ai wei wei reported his local file was missing when he
visit Taiwan. some Media practitioners also reported they under attacks, such as New York Time reported that Hackers in China Attacked The Times for Last 4 Months .[ chinese version here ]
I am also under Advanced Persistent Threat for years, I am use to be a network engineer, so I knew how to recognize attacks and protect myself. and I make a blog to archive attack email at
http://mumayoujian.zuo.la/ ,