Kapersky labs has some great information on web security and viruses. Each month they publish a top twenty list. The top twenty for June 2005 are here. Viruslist.com – Virus Top Twenty for June 2005
Here are the Top Five
| Position | Change in position | Name | Percentage |
| 1. |  0 |
Net-Worm.Win32.Mytob.c | 19.55 |
| 2. | 0 |
Email-Worm.Win32.NetSky.q | 11.50 |
| 3. |  +6 |
Email-Worm.Win32.Zafi.d | 5.33 |
| 4. |  New |
Net-Worm.Win32.Mytob.be | 4.68 |
| 5. |  -2 |
Email-Worm.Win32.NetSky.aa | 4.60 |