Add this replay plugin on the whole network on CubedCraft.
No evidence? No problem. This replay plugin can do it for you. Catch hackers easily on warzone/kitpvp with this replay mod.
https://www.spigotmc.org/resources/advancedreplay-1-8-1-16.52849/
Note: If the plugin has too many bad ratings, I found a new replay plugin. https://www.spigotmc.org/resources/x-replay-advanced-replay-plugin.49554/
I feel like this post would be helpful, however custom coded plug-ins give better results. I know this from experience.
-Skritzy