| 2004-07-27 | Lithium.4113 |
| 2004-07-27 | Liquid.1016 |
| 2004-07-27 | Worm.Win32.Lioten |
| 2004-07-27 | LionKing.3531 |
| 2004-07-27 | Macro.Excel97.Linik |
| 2004-07-27 | Linc (rodzina) |
| 2004-07-27 | Lilith |
| 2004-07-27 | LightNing.4251 |
| 2004-07-27 | Lifeform.2101 |
| 2004-07-27 | Liberty |
| 2004-07-27 | Li (rodzina) |
| 2004-07-27 | Lhb.1989 |
| 2004-07-27 | Lewd (rodzina) |
| 2004-07-27 | Level3.4870 |
| 2004-07-27 | Leproso.1221 |
| 2004-07-27 | Leo.3948 |
| 2004-07-27 | Worm.Win32.Lemoor.a |
| 2004-07-27 | Lemming (rodzina) |
| 2004-07-27 | Trojan-PSW.Win32.LdPinch.a |
| 2004-07-27 | Lamerman |
| 2004-07-27 | LX (rodzina) |
| 2004-07-27 | LV.477 |
| 2004-07-27 | LG |
| 2004-07-27 | Kyokushinkai |
| 2004-07-27 | Kuarahy.4608 |
| 2004-07-27 | Worm.P2P.Krepper.c |
| 2004-07-27 | Koh |
| 2004-07-27 | Kiev.2048 |
| 2004-07-27 | Keypress.Ufo |
| 2004-07-27 | Backdoor.Katien |
| 2004-07-27 | Trojan.IRC.KarmaHotel |
| 2004-07-27 | Kaczor.4444 |
| 2004-07-27 | Junkie (rodzina) |
| 2004-07-27 | JumpBoot |
| 2004-07-27 | Joshi (rodzina) |
| 2004-07-27 | OS2.Jiskefet |