Every new version of MyDoom should be carefully watched as the "A" variant did $38 billion in estimated damages. Extensive volumes of email and spamming have resulted from some variants appearing to be email transmission error.s
MyDoom.N - new variant to watch
http://vil.nai.com/vil/content/v_126797.htm
http://secunia.com/virus_information/10738/
http://secunia.com/virus_information/10749/
http://www.sarc.com/avcenter/venc/data/w32.mydoom.l@mm.html
Attachment Extensions: .cmd, .bat, .pif, .com, .scr, .exe, zip