Viruses recently discovered in-the-wild.

BadTrans.b
A new variant of the BadTrans virus has emerged. BadTrans.B is a mass-mailer and keystroke-stealing Trojan combined. Affects Microsoft® Windows users only.

Aliz worm
Aliz may be one of the smallest Win32 infectors to date. Weighing in at only 4Kb, Aliz randomly composes its infection carrying email from five lists of options and then sends itself using the system's defaults SMTP server.

Klez Worm
According to F-Secure, Klez is a mass-mailer worm which drops a polymporphic EXE virus called ElKern. The e-mails sent by Klez can have a wide variety of different subject fields, the email body is blank, and the attachment name varies.

Vote Worm
Masquerading as a means to vote for peace between America and Islam, this mass-mailing worm deletes files and reformats Windows systems.

Nimda worm
Exploiting multiple Microsoft vulnerabilities, the Nimda worm severely compromises the security of infected systems.

Code Red II
Code Red II affects unpatched Microsoft IIS web servers and can disrupt unpatched Cisco routers.

Code Red
Taking advantage of a buffer overrun vulnerability, Code Red affects web servers running Microsoft IIS only.

SirCam virus
A mass-mailing email worm with random payloads, SirCam affects Microsoft Windows users only.

Lion Worm (Linux)
The Lion worm is similar to the Ramen virus but significantly more dangerous. The Lion worm affects Linux machines running the BIND DNS server, versions 8.2, 8.2-P1, 8.2.1, 8.2.2-Px, and all 8.2.3-betas.

Magistr Virus
The virus has a malicious payload that can erase information found in the system BIOS and destroy sectors on the hard drive as well. Affects Windows 32-bit systems only.

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