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In other words, if a laptop has a built-in camera, it’s possible someone — whether the federal government or a malicious 19 year old — could access it to spy on the user at any time.

One laptop, many chips The built-in cameras on Apple computers were designed to prevent this, says Stephen Checkoway, a computer science professor at Johns Hopkins and a co-author of the study.

That allows the camera to be turned on while the light stays off.

Their research is under consideration for an upcoming academic security conference.

For example, he demonstrated an attack last year on the software that controls Apple batteries, which causes the battery to discharge rapidly, potentially leading to a fire or explosion.

Another researcher was able to convert the built-in Apple keyboard into spyware using a similar method.

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