WHEN a window pops up saying that your PC’s security software needs updating, the temptation is to click it away with irritation. The story of the Conficker worm (“Conficker: the enemy within”) shows what the consequences can be. This malicious software has seized control of more than 3 million computers and is using them to send billions of spam emails. If this were the only consequence, it might be easy to dismiss. But as its threat , Conficker is a timely reminder that our attitudes to computer security need updating too.
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