Webcams should be covered when not in use because hackers could be using them to spy on people, a charity advises.

Childnet International says webcams should be disconnected when not in use, and teenagers should not leave webcams in bedrooms or other private areas.

A BBC Radio 5 live investigation found sites where hackers exchanged pictures and videos of people captured on their own webcams without their knowledge.

A police spokeswoman said webcam hackers would be prosecuted.

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