from the cute-until-they-escape dept.
holy_calamity writes "Technology Review reports that researchers installed 3000 copies of Windows XP on a high performance cluster at a Canadian university and set loose the Waledac botnet on them. It's the first time researchers have built and operated their own botnet as a strategy to better understand those at large on the internet. Doing it inside an experimental computing cluster removes the legal and ethical complications of experimenting with live botnets that control innocent users' machines."
egrep patterns are full regular expressions; it uses a fast deterministic
algorithm that sometimes needs exponential space.
-- unix manuals