Basically, if someone hacks the master node, they get accessed to the slaved nodes (or they can hack the slave directly but ONLY through a wired connection, and at a threshold modifier for the attempt - it's not subtle). But if it's slaved to Nitro, that means that it's slaved to her bionode, not her comm (which is basically just storage for her) - and you cannot hack the bionode without having Resonance yourself; it's not even possible to make the attempt.