Can people really spy on me through my laptop's or smartphone's camera?

​​The answer will surprise and worry you.​

Hidden Camera WiFi USB Charger Camera, Spy Camera 5-Port Phone Charger 1080P Wireless Security Camera, Video Recording with Motion Detector for Home Office Surveillance, Support iOS/Android : Electronics

10 Signs That Your Phone Has Been Hacked

Will putting tape on your laptop camera stop people from spying on you? - Reviewed

Mark Zuckerberg Covers His Laptop Camera. You Should Consider It, Too. - The New York Times

Webcam Hacking: Can Your Webcam Spy on You?

Are your phone camera and microphone spying on you?, Dylan Curran

Webcam hacking: How to know if someone may be spying on you through your webcam

Process and Control Today Signs that your camera and microphone have been hacked

How to Know If Your Phone is Hacked - 5 Signs

Seven red flags that your webcam has been hacked and how to lower the risk - Mirror Online