Psyb0t targets home routers

Interesting trends we are seeing in the b0t world, this worm takes over people’s routers/modems and use them as an attack platform to conduct distributed denial of service (DDoS) attacks. People usually notice a bot on their PC, but when you put it on the router, who would ever notice the performance hit and suspect the router? The worm also blocks access to the admin ports on the router/modem, thereby making it most difficult to troubleshoot.

http://www.theregister.co.uk/2009/03/24/psyb0t_home_networking_worm/