"The teams at Berkley and UCSD conducted the experiment by
impersonating a key component of the Storm worm network used to
hand off instructions from the worm's master control servers to the
"worker bots" -- the tens of thousands of infected end-user systems
that do all the spamming.
"This allowed them to redirect a subset of the spam to virtual
storefronts created by the researchers to mimic the pharmaceutical
Web sites advertised by the real Storm spam."