Unprotected home computers vulnerable to hijack

Protect your home computer or you could unwittingly help to launch a cyber attack, experts are warning.They say the rise in such attacks risks undermining critical national infrastructure and the future of the global economy.Thousands of vulnerable personal computers are being signed up without their owner’s knowledge to form “botnets”, or “bot armies”, sometimes spread across numerous geographical locations in countries all round the globe, experts have told BBC Newsnight.

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