I rooted MJ5 with kingo. I did read rumors of kingo sending your IMEI to servers. Before I rooted I asked myself a couple of questions, what can people really do with my IMEI? Yeah sure, somebody can use it to activate a stolen phone. Why do I care? Can that blacklist my phone? As far as I know only the owner can blacklist a phone. Just like only the owner can get it off the blacklist.
So I didn't care and used it. It worked like a charm. I personally think all those malicious rumors were started by XDA developers, that were mad because they couldn't figure out how to do it themselves and the kingo developers wouldn't share how they did it.
I also read a thread were somebody posted the kingo terms and user agreement. The terms states, that no information will be sent anywhere. Now why would they violate their own terms and put themselves in a situation where they can get sued?
Sent from GNote 3 rooted with kingo.
Rooted LG L90 D415, Stock 4.4.2
Rooted Galaxy Note 3, Stock 4.3 (Sold)