I have seen this firsthand -- the botnet DoS attacks have begun,
and with a furor.
I saw an extraordinarily large network brough to it's knees today
by an IRCbot.es Dos.
I felt like Nero -- fiddling while Rome burned.
Cisco - ZOTOB and WORM_RBOT.CBQ Mitigation Recommendations
http://www.uniras.gov.uk/niscc/docs/br-20050819-00710.html?lang=en
Be afraid.
-- ferg