4O'Sullivan S. Instant messaging vs. instant compromise[J]. Network Security, 2006(7): 4-6.
5Lib/Chun-kuan. A study of monitoring technologies in instant messen_ger[EB/OL]. [2011-06-15]. http://thesis.lib.ncu.edu.tw/ETD- db/ETD-search/getfile?URN--93523042&filename--93523042.pdf.
6Xiao Z, Guo L, Tracey J. Understanding instant messaging traffic characteristics[C]//Proc of 27th International Conference on Dislfibuted Computing Systems. Toronto: IEEE Press, 2007: 51-58.
7LILT Zhi-jun, LIN Wei-li, LI na, et al. Detecting and filtering instant messaging spam-a global and personalized approach[C]// Proc of lst/EEE ICNP Workshop on Secure Network Protocols. Boston, USA: IEEE Press, 2005: 9-24.
8Kim S. Implementation of the security system for instant messengers[J]. Journal of Systems and Software, 2007, 80(10): 1590-1593.
9Day M, Rosenberg J, Sugano H. RFC2778: A model for presence and instant messaging[S].
