Remotely interfering into a computer normally refusing access to force it to transmit vidoe/data is a blatent violation of the 4th Amendment and illegal, yes. T

Remotely interfering into a computer normally refusing access to force it to transmit vidoe/data is a blatent violation of the 4th Amendment and illegal, yes. The "Remotely interfering into" part specifically since you're entering into a person's property without a warrant. If the webcam was already transmitting for a Skype call or whatever then you can argue over privacy in transit all you want but first you need the person to knowledgeably consent to starting the transmission.