My friend was on her computer listening to music on youtube and she got a message to say The Police(not the band) had locked her computer as she was using the site illegally and she will have to pay ÂĢ100 to have it unlocked.
Always make sure you have antivirus & security software installed and up to date.
I would be slightly worried about what you can't see - for example if you have malware on your computer, is it gathering information in the background?
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