| 2004-07-27 | C0m.263 |
| 2004-07-27 | ByteWipe.1204 |
| 2004-07-27 | ByteSV.379 |
| 2004-07-27 | Worm.Bymer.a |
| 2004-07-27 | Bye.641 |
| 2004-07-27 | ByXute.1056 |
| 2004-07-27 | Constructor.BAT.BWG |
| 2004-07-27 | Bward.1024 |
| 2004-07-27 | Email-Worm.Win32.Buzill |
| 2004-07-27 | Buttugly.552 |
| 2004-07-27 | Joke.Buttons |
| 2004-07-27 | Worm.Win32.Busan |
| 2004-07-27 | Email-Worm.Win32.Burnox |
| 2004-07-27 | Bupt9146 |
| 2004-07-27 | Worm.Bumerang |
| 2004-07-27 | Win95.Bumble |
| 2004-07-27 | Macro.Word.Bukit |
| 2004-07-27 | Buggeroo.1300 |
| 2004-07-27 | Buffalo.486 |
| 2004-07-27 | Macro.Word.Buero |
| 2004-07-27 | BuenDia.816 |
| 2004-07-27 | Bucharest |
| 2004-07-27 | Email-Worm.VBS.BubbleBoy |
| 2004-07-27 | Btg.792 |
| 2004-07-27 | Bryansk.673 |
| 2004-07-27 | Bruces.417 |
| 2004-07-27 | Brothers |
| 2004-07-27 | Email-Worm.VBS.Brit |
| 2004-07-27 | Email-Worm.Win32.Bridex |
| 2004-07-27 | Brezhnev.974 |
| 2004-07-27 | Macro.Word97.Breeder |
| 2004-07-27 | Macro.Word.Breeder |
| 2004-07-27 | Breakdown.997 |
| 2004-07-27 | Macro.Word97.Break |
| 2004-07-27 | Bravo |
| 2004-07-27 | Bravo!.502 |