Paulson, L.D. (April 2006). „Hackers Strengthen Malicious Botnets by Shrinking Them“(PDF). Computer; News Briefs. 39-jild, № 4. IEEE Computer Society. 17–19-bet. doi:10.1109/MC.2006.136. „The size of bot networks peaked in mid-2004, with many using more than 100,000 infected machines, according to Mark Sunner, chief technology officer at MessageLabs.The average botnet size is now about 20,000 computers, he said.“
Heron, Simon (1-aprel 2007-yil). „Botnet command and control techniques“. Network Security. 2007-jild, № 4. 13–16-bet. doi:10.1016/S1353-4858(07)70045-4.{{cite magazine}}: CS1 maint: date format ()
Paulson, L.D. (April 2006). „Hackers Strengthen Malicious Botnets by Shrinking Them“(PDF). Computer; News Briefs. 39-jild, № 4. IEEE Computer Society. 17–19-bet. doi:10.1109/MC.2006.136. „The size of bot networks peaked in mid-2004, with many using more than 100,000 infected machines, according to Mark Sunner, chief technology officer at MessageLabs.The average botnet size is now about 20,000 computers, he said.“