| Virus Name/Info | Number of Occurances |
| UNAUTHORIZED_MAIL_SUBJECT. | 32 |
| Win32/Magistr.B@mm. | 1 |
| Win32/Klez.H@mm. | 26 |
| JS/Nimda.A. | 1 |
| UNAUTHORIZED_MAIL_ATTACHMENT. | 6 |
| Win32/Magistr.A@mm. | 2 |
| HTML/IFrame_Exploit*. | 118 |
| Total viruses for week ending Jul 28 | 186 |
| Virus Name/Info | Number of Occurances |
| UNAUTHORIZED_MAIL_SUBJECT. | 30 |
| Win32/Magistr.B@mm. | 3 |
| Win32/Klez.H@mm. | 35 |
| Win32/Yaha.F@mm. | 15 |
| Win32/Magistr.A@mm. | 2 |
| JS/Nimda.A. | 1 |
| UNAUTHORIZED_MAIL_ATTACHMENT. | 5 |
| HTML/IFrame_Exploit*. | 184 |
| Total viruses for week ending Jul 21 | 275 |
| Virus Name/Info | Number of Occurances |
| Win32/Yaha.F@mm. | 11 |
| UNAUTHORIZED_MAIL_ATTACHMENT. | 8 |
| Win32/Magistr.A@mm. | 4 |
| UNAUTHORIZED_MAIL_SUBJECT. | 51 |
| Win32/Magistr.B@mm. | 7 |
| Win32/Klez.H@mm. | 55 |
| Win32/Klez.E@mm. | 1 |
| JS/Nimda.A. | 2 |
| HTML/IFrame_Exploit*. | 174 |
| Total viruses for week ending Jul 14 | 313 |
| Virus Name/Info | Number of Occurances |
| Win32/Yaha.F@mm. | 11 |
| I_Worm/Fix2001.12288. | 2 |
| Win32/Magistr.A@mm. | 6 |
| UNAUTHORIZED_MAIL_ATTACHMENT. | 5 |
| UNAUTHORIZED_MAIL_SUBJECT. | 73 |
| Win32/Magistr.B@mm. | 4 |
| Win32/Klez.H@mm. | 42 |
| Win32/Klez.E@mm. | 4 |
| JS/Nimda.A. | 1 |
| HTML/IFrame_Exploit*. | 158 |
| Total viruses for week ending Jul 7 | 306 |
