By John E. Dunn
17 November 2008
The dramatic fall in spam traffic reported last week after alleged rogue
ISP McColo was taken offline will only be a temporary reprieve and could
actually generate a new wave of Trojans, experts have warned.
ISPs disagree on the global percentage drop caused by the shuttering of
California-based McColo last Tuesday, with estimates given by those
contacted by Techworld ranging from 50 to 80 percent, but even the lower
figure is still an unprecedented fall in such a short space of time. It
appears that even those who were aware of its use as a hosting port had
not guessed that a single ISP could be behind such a huge chunk of the
"Our servers haven't been so relaxed for months," said Richard Cox, CIO
of respected spam-fighting organisation, Spamhaus, ruefully. "This
proves how important it is for the law to get at this sort of
Nevertheless, Cox doubted that the improvement would last long, and
could actually lead to a rise in Trojan attacks as spammers using McColo
to host botnet control infrastructure, attempted to reconstitute their
networks elsewhere in the coming weeks.
Visit the InfoSec News Security Bookstore
Best Selling Security Books and More!