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Netsky Worms Just Keep On Coming: Page 2 of 2

This variant also includes embedded text in its code, said anti-virus vendor Panda Software, a trait of many in the Netsky and Bagle families. "Now we are presenting our new AntiHacker Engine - SkyNet Team," the text reads.

The patch for the IE vulnerability to stymie Netsky.v's tactic is available here for versions 5.01, 5.5, 6.0, and 6.0 for Windows Server 2003 of the Microsoft Web browser.

Netsky.w, which was discovered Friday, is a more traditional Netsky worm, in that it includes a file attachment -- the attachment can sport .exe, .pif, .scr, or .zip extensions -- and deletes versions of the MyDoom, Mimail, and Bagle worms it finds on the compromised machine.

Both Netsky.v and Netsky.w are currently tagged as relatively low threats by anti-virus firms.