I was just reading GitS: Man-Machine Interface and I noticed something that was absolutly inspiring. In Man-Machine Interface Motoko gets a job with an E-brain manufacturer and used the position to place backdoors in all of the E-brains that the company produced. This allowed her to extract information or conduct survailance on a masive scale.
Now, I'm wondering if there is any reason why a datajack manufacturer couldn't secretly put a dataline tap in a new model. For that matter, what kind of access would such a compromised datajack give the manufacturer. Obviously access to all information going into or out of the jack. But what about headware memory or eye-cams? For that matter, could a manufacturer design several innocous pieces of cyberware to work together as a full survailance suite?
Another question that has been bugging me is how exactly do medical professionals measure essence. It is a tricky busines when installing cyberware. They have to know exactly how much essance a part takes up because if they are off significantly then the patient will die. But, essence is purely a meatphysical game mechanic. There doesn't seem to be any way to percisly measure essence loss, with a magic.