| 2004-07-27 | Win32.Ultratt |
| 2004-07-27 | Macro.Word.Ultras (rodzina) |
| 2004-07-27 | TrojanDownloader.Win32.Ultimx |
| 2004-07-27 | Ugur.1297 |
| 2004-07-27 | Ugrad.1145 |
| 2004-07-27 | Macro.Word.Uglykid |
| 2004-07-27 | Ufro |
| 2004-07-27 | Ufa.1201 |
| 2004-07-27 | Uestc.888 |
| 2004-07-27 | Macro.Excel.Uedasun |
| 2004-07-27 | Uddy.2617 |
| 2004-07-27 | Uck.475 |
| 2004-07-27 | U.524 |
| 2004-07-27 | Macro.Word97.UScan |
| 2004-07-27 | USTC.919 |
| 2004-07-27 | USSR.414 |
| 2004-07-27 | UPS.1155 |
| 2004-07-27 | Win95.Vip |
| 2004-07-27 | Macro.Word97.Typo |
| 2004-07-27 | Typebug.951 |
| 2004-07-27 | TypeII.988 |
| 2004-07-27 | Txapela.1587 |
| 2004-07-27 | Macro.Word.TwoLines |
| 2004-07-27 | Macro.Word.Twister |
| 2004-07-27 | Twer.1000 |
| 2004-07-27 | Tver (rodzina) |
| 2004-07-27 | Tutan.1034 |
| 2004-07-27 | Turnip.290 |
| 2004-07-27 | Turn (rodzina) |
| 2004-07-27 | Turkish.604 |
| 2004-07-27 | TurboVirus.1919 |
| 2004-07-27 | TurboBasic |
| 2004-07-27 | Worm.Win32.Tulu |
| 2004-07-27 | Tula96.1997 |
| 2004-07-27 | Tuesday.1502 |
| 2004-07-27 | Tubo |