I was being specific, not general. Here's what I mean -
Do you crinkle in fear each time a car comes at you from the opposite direction?
I'm sure I was quite afraid the first time I drove. However, I quickly learned that the danger was minimal, there were postive steps I could take to minimize it, and if something did go horribly wrong there was only a vanishingly small chance that someone was deliberately causing a problem. I got used to it, obviously, since they don't bother me now. I don't remember exactly, but I feel sure I actually got used to it before I finished my first drive.
I understand that all of life is potentially dangerous. That was not my point.
Prior to the implanted defibrillator, my sis had a pacemaker. It was just under the skin and checking it required placing an electronic puck of some sort directly on the skin over the pacemaker. That was how it was connected to a testing console. Making changes to the way it worked was a bit complicated, took some time, and required the cooperation of the patient (at minimum, to just sit there and let the work happen).
The defibrillator was very different. There was no puck and it could be accessed from a vastly greater distance. Also, the technician could instantly, with a few keystrokes, turn my sister's heart up or down whether my sister was cooperating or not. In my first post, I was relating that this was the first time we realized that the implanted defibrillator required her to trust her life to a technology that could be so easily abused. Now that she's gone through it, she accepts the risk.
However, it's a case of believing "I'm not a target/security through obscurity" that allows her to accept this situation. She really is completely defenseless against anyone close by who can send the right wireless signals. She accepts the risk in exchange for the rewards but the initial shock at realizing the risk existed (and having it so clearly, offhandedly demonstrated) was NOT unjustified. I feel sure that if she were a public person like Cheney, she, too, would have wanted wireless access disabled.