Assuming KIC[numbers] *is* their home system, not some outpost on their frontier.

I don't think we need to worry about being colonized per say, because why bother, but what if they show up in our system, and start building a dyson swarm round the sun? We'd be like "uh, excuse me, do you mind? We're fucking using that" but they don't hear because they only perceive the upper 6 dimensions or some shit.

Alternatively, if they are only in their own system that kind of implies things like the alcubierre drive are a wash which is pretty meh.