| 2004-07-27 | Win95.Yildiz |
| 2004-07-27 | YesNo.862 |
| 2004-07-27 | Yellow.1361 |
| 2004-07-27 | Macro.Excel97.Yawn |
| 2004-07-27 | Email-Worm.Win32.Yarner |
| 2004-07-27 | Yard (rodzina) |
| 2004-07-27 | Email-Worm.Win32.Yanker |
| 2004-07-27 | Yale |
| 2004-07-27 | Yafo.328 |
| 2004-07-27 | Win95.Yabran |
| 2004-07-27 | YZ (rodzina) |
| 2004-07-27 | YZ.1230 |
| 2004-07-27 | YCHV.1080 |
| 2004-07-27 | YADE.2365 |
| 2004-07-27 | Xynet.947 |
| 2004-07-27 | Xvxh (rodzina) |
| 2004-07-27 | Xute.1182 |
| 2004-07-27 | Macro.Word97.Xute |
| 2004-07-27 | Xram.1000 |
| 2004-07-27 | Win32.Xorala |
| 2004-07-27 | XorA.1024 |
| 2004-07-27 | Macro.Excel97.Xlscan |
| 2004-07-27 | Xing.1308 |
| 2004-07-27 | Win95.Xine2.7363 |
| 2004-07-27 | Worm.P2P.Xerom |
| 2004-07-27 | BAT.8Fish |
| 2004-07-27 | 4Seasons.1534 |
| 2004-07-27 | Xed.2869 |
| 2004-07-27 | Email-Worm.Win32.XCod |
| 2004-07-27 | Email-Worm.Win32.Xanax |
| 2004-07-27 | Xam.797 |
| 2004-07-27 | XXX.1060 |
| 2004-07-27 | XWG.1333 |
| 2004-07-27 | XTC.2153 |
| 2004-07-27 | Trojan.Win32.Xalnaga |
| 2004-07-27 | Wvp.782 |