The distribution of malware on social networking sites first occurred in small amounts towards the end of 2007, but that trend appears to be on the rise.According to a report from MessageLabs Intelligence, which specializes in the analysis of messaging security issues and threats, a popular tactic in 2008 among cyber criminals involved the creation of fictitious accounts on social networking sites. These fake accounts were then used to post malicious links, which usually led to a phishing site, to legitimate users.
http://mis-asia.com/news/articles/social-networking-sites-a-hotbed-for-cyber-crime
http://www.pcworld.com/businesscenter/article/158271/.html
Cybercrooks Target Social Networks
The distribution of malware on social networking sites first occurred in small amounts towards the end of 2007, but that trend appears to be on the rise.