This article (posted yesterday) is about the announcement of a huge China-based cyber espionage which stole thousands of documents - including classified information, visa applications, and personal identities - from "politically sensitive targets" around the world using platforms such as Twitter, Google Groups, Blogspot, Baidu Blogs, blog.com and Yahoo Mail to maintain persistent control of infected computers.
Among the targets: the offices of the Dalai Lama, the United Nations as well as Indian and Pakistani government officials.
Also available in this article, a report document of 58 pages about "Investigating Cyber Espionnage" (scribd application)