"We've always had to worry about the electrical grid and nuclear facilities, and they remain a concern; but cyber-terrorism, you know, which is a word that you hear more and more, I think is a reality."

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Cyber Leader: Daleks, be warned. You have declared war upon the Cybermen. Dalek Sec: This is not war - this is pest control! Cyber Leader: We have five million Cybermen. How many are you? Dalek Sec: Four. Cyber Leader: You would destroy the Cybermen with four Daleks? Dalek Sec: We would destroy the Cybermen with one Dalek! You superior in only one respect. Cyber Leader: What is that? Dalek Sec: You are better at dying.

— Russell T Davies