中国官媒：海外黑客攻击致近期网络问题 (Chinese state media says overseas hackers caused the recent Internet problems)
Deutsche Welle, May 1, 2015
http://www.dw.de/中国官媒海外黑客攻击致近期网络问题/a-18423110
Apps you won’t have heard about at Beijing’s GMIC
Reporters without Borders, May 1, 2015
http://en.rsf.org/china-apps-you-won-t-have-heard-about-at-02-05-2015,47848.html