Most everyone who's used cyberpanel agrees that it's got a lot of potential - it's fast and super intuitive and user friendly. However, bugs and lack of updates have steered some people away from cyberpanel.
I found a statement on a public forum made by the cyberpanel developer saying that they're undertaking a paid security audit by rack911, but still have a ways to go before all the recommendations are implemented. I was really excited to hear this and look forward to trying cyberpanel again when some of the bugs and flaws are patched up. You can find the developers statement here:
https://www.lowendtalk.com/discussion/121796/cyberpanel-control-panel-based-on-openlitespeed-updated/p29