Secondly, this is the second edition in which we have had full wireless capabilities. I think by now anyone who is competent will realize that the most secure thing they can do is simply log off.
I am all with you. But for covert ops and so on. When you have to be connected (for example, assuming you are using a link in a Secure AAA area), well being connected being a staple, why not trying to get some advantage from it. If you are not in a situation of direct opposition, but more something where the target is not aware of your presence, well having some distributed computation around (I don't think that could be identified as an activity, but I would like to see some specific detection actions for this) could help.
If you do it in the smart way, not going all out wireless so that if tables turn, then you will be able to get your nervous system hacked because you put your wired reflexes as well as your goggles online...
Then there's Sybil, which we still don't have a good grasp on... you know what, forget the data jack... i'll use goggles and bio-ware.
We don't know if bioware implantation use nanotech, you know. That could be in some body areas;) So maybe no implanted character is safe.