http://www.virusbtn.com/resources/vgrep/vgrep.cgi?terms=sigger&product=0
http://es.trendmicro-europe.com/enterprise/security_info/ve_detail.php?VName=TROJ_FLOOD.CS.DR
http://www.pestpatrol.com/PestInfo/db/b/backdoor_irc_flood_a.asp
http://securityresponse.symantec.com/avcenter/venc/data/irc.trojan.html