Help my server is being attacked

[john01dav]

I use industrial information panels for showing the rules at my spawn and I find griefers constantly going and changing them. I have them claimed with the griefprevention plugin and the correct ids in the config however they still are not protected. I also find the minium stone's transmute placed block feature being used for griefing and I would like to stop it from working in other's claims. Also I am finding random griefs all over the place with no coreprotect data. I essentials want some help bolting down the security on my server so it is as ungriefable as claims are in vanilla.