Several Netsky variants will start a new Distributed Denial-of-Service attack either today or on Sunday, targeting these three sites:

www.nibis.de
www.educa.ch
www.medinfo.ufl.edu

The administrators of these sites have been warned, and they have taken measures to protect themselves against the attacks.

However, especially the Netsky.X and Netsky.Y variants are quite widespread and the attacks could be quite serious.