What are the usual exploits rogue diallers take advantage off then?
My point is, and you don't seem to deny, that you've resorted to abductive logic instead of the typical deductive kind. Unfortunately, abduction isn't sound reasoning, and only works if there aren't any significant unknown information. You're saying that just because the attack typically happens in some way, that must be the way it happened in this specific case. You're making this conclusion because you cannot know of any other way the infection could have happened. From my point of view, this is ignorance and not insight.
You see, if X implies Y, and you only know Y is true, you cannot say that X has happened unless you know for certain that there's no other way Y could be true. In this case, you definitely don't have such certainty, and I'm sure you admit it yourself as well.
It's like saying that since you can make people smile by drugging them, you all must be drugged if you smile at the logic in this sentence. Or did you know that you can make people post to microsuck forums by shoving a pineapple up their ass? What does that tell about you all? Get the point?