I play a 231 Kanna on Kradia and I must say, I've not been banned yet so if you truly are legitimate, you most likely have a small percent to get banned. I've been training and bossing, and all the normal things a Kanna should be doing. I too fear that I will be illegitimately banned, so I do take precaution in making sure that I don't associate with any known hackers/any hackers at all.
To those who were banned whilst being legitimate, I do hope Nexon gets your account back because that's so unfair. If you've spent anywhere near as much NX as me, you deserve your account back.