1. Banes, D. (2001), “Editorial”, Symantec Security Response Newsletter, available at: www.win2000mag.com/Articles/Index.cfm?ArticleID=8773
2. Bridwell, L.M. and Tibbett, P. (2000), Sixth Annual ICSA Labs Computer Virus Prevalence Survey 2000, ICSA Labs, available at: www.trusecure.com/html/tspub/pdf/vps20001.pdf
3. Kabay, M.E., Tippett, L.M. and Bridwell (1999), Fifth Annual ICSA Labs Computer Virus Prevalence Survey, ICSA Labs, available at: www.icsa.net/html/library/downloads/VPS99‐final.pdf
4. Sophos (2000), Virus Top Ten 2000, available at: http://www.sophos.com/pressoffice/pressrel/uk/20001202yeartopten.html
5. Business Journal (1997), “Microsoft announces service release of Office 97”, Business Journal, available at: seattle.bcentral.com/seattle/stories/1997/05/05/daily14.html