angry tapir writes: "One of the discussions at the Source Boston Security Showcase has been the "militarisation" of the Internet. Governments looking to silence critics and stymie opposition have added DDOS attacks to their censoring methods, according to Jose Nazario, senior security researcher at Arbor Networks, with international political situations spawning DDOS attacks."
egrep patterns are full regular expressions; it uses a fast deterministic
algorithm that sometimes needs exponential space.
-- unix manuals