When the FBI interrogate, they have people whose expertise is to use your entire body language including facial expressions, etc... to gather information. Givi

When the FBI interrogate, they have people whose expertise is to use your entire body language including facial expressions, etc... to gather information. Giving an attacker the ability to monitor your body language while they have full control of your computer is extremely dangerous as they have established a closed loop to interact with you without your consent or knowledge. As the FBI also excell in this kind of subversive intelligence gathering, it figures they would be wary of being on the other end of it. An example is if a chinese, Russian, corporate spy had them on the other end without their knowledge. Edit: Another topic is the issue of criminals who use extortion. This is far more common than you likely realize or aware of. Where we are the criminals and intelligence saboteurs/spies are alot more sophisticated, and use computer hacks as part of their planning to extort and blackmail their targets.