Trend Micro escalates 4 new viruses to Medium Risk in one day

Yesterday was a busy day for virus and system administrators in applying protection to their servers and desktops.  Please continue to be careful with email and Instant Messaging.  The escalation of 4 different new viruses to Medium risk in a single day is unusual and hopefully today things will settle down. 

Below are links for all of the Medium Risk worms from yesterday: 

Kelvir.B -- New Messenger worm
http://secunia.com/virus_information/15994/kelvir.b/

SpyBot.AUK - dropped by Kelvir and can spread in an unpatched network
http://secunia.com/virus_information/16011/sdbot.auk/

Crog/Fatso - Another MEDIUM RISK IM worm (contains inappropriate content)
http://secunia.com/virus_information/15999/crog/

Sober.L - New EMAIL worm (zip attachments)
http://secunia.com/virus_information/16027/sober.l/