Read the article here.
“Beating the ‘botnets’ – armies of infected computers used to attack websites – requires borrowing tactics from the bad guys, say computer security researchers.
“A team at the University of Washington want to marshal swarms of good computers to neutralise the bad ones. They say their plan would be cheap to implement and could cope with botnets of any size.”
Read UW CSE “Phalanx” paper here