| Top 39 Virus Sources |
| Count | Host |
| 18 | ss59.shared.server-system.net |
| 17 | ss52.shared.server-system.net |
| 12 | ss57.shared.server-system.net |
| 10 | 222.122.156.203 |
| 10 | mx-out2.daemonmail.net |
| 8 | one.cs.duke.edu |
| 7 | 221.139.3.148 |
| 6 | mail.kph-inc.com |
| 6 | mail.agio-usa.com |
| 6 | ebzonline.com |
| 6 | winmain.rutgers.edu |
| 5 | mail.repsco.com |
| 5 | vw-dfw-mail4.emailscience.com |
| 5 | mail.aiia.co.kr |
| 5 | ip-209-90-77-80.forgeglobal.com |
| 5 | mail.bestwoods.com |
| 4 | visionmedia-40.sf.dnet.lv |
| 4 | teaching1.denver.wehostwebsites.com |
| 4 | exchange.lamalfa.com |
| 4 | esc13.midphase.com |
| 4 | mail.tismc.com |
| 4 | 218.189.211.165 |
| 4 | mail.uvdl.com |
| 4 | host3.digival.net |
| 4 | mail.fenying.com.tw |
| 4 | mx2.cisbg.com |
| 4 | dimacs.rutgers.edu |
| 4 | olddavidhume.rutgers.edu |
| 3 | mail.integro.spb.ru |
| 3 | mail.townsiteco.com |
| 3 | wsip-70-166-4-140.sd.sd.cox.net |
| 3 | 66-17-34-56.biz.visl.arrival.net |
| 3 | 66.102.127.16 |
| 3 | mail.americanoutfitters.com |
| 3 | relais.videotron.ca |
| 3 | ektmail2mta1.euskaltel.es |
| 3 | ektmail1mta1.euskaltel.es |
| 3 | duke.cs.duke.edu |
| 3 | rulink2.rutgers.edu |