It appears that Chinese government hackers are attacking Tibetan protest networks. The goal is clearly to infiltrate their computer systems and likely to gain access to all protest contacts, mapping the social networks of connections between them.
Groups sympathetic to anti-Chinese protesters in Tibet are under assault by cyber attackers who are embedding malware in email that appears to come from trusted colleagues.
The email is being sent to members of human-rights groups. The messages include attachments in PDF, Microsoft Word and Excel formats, that install keyloggers and other types of malware once they're opened. The malicious payloads have been disguised to evade detection by anti-virus scanners.
In effect, compromised computers become cyber informants.