It’s a technology fact: virtual peripherals controls hardware peripherals in the virtual domain size.
Once a system is connected to the Internet, the virtual domain assumes the dimensions of the Internet: worldwide.
Your screen, your webcam, your microphone, your input methods, your disks… practically each part of your computer/smartphone/device is controllable by the Internet.
Sometimes these features are enabled by the owner, other times by pirates attacking the system of the victim with a malware and least but not last, standing to Snowden revelations, even Governmental interception systems has the capability of activate a data stream from you computer.