The anti-spam community is unlikely to have any future successes on the same
scale of the McColo shutdown, as botnet herders have learned from their mistakes
to make botnets harder to track and close, according to McAfee.
In the security giant's monthly spam report released today, technology lead
Adam Wosotowsky and director of product marketing Elan Winkler argued that "McColo
has taught botnet owners a lesson".
"As a result, botnet control centres have become more distributed, spanning
many networks in many countries. The loss of a big hosting provider today would
prove only a minor inconvenience – as opposed to a major defeat – for spammers,
" they wrote.