This is what the Ghost Hack fastmining feature will do. Fastbreaking through multiple layers of blocks and move in before the blocks regen in protected areas. You can also see that he moves very fast. Anything we can do about it?
Well I meant, it's not hard to make that check; when I replied I thought you asked me to give the plugin that checks that Anyway, since I mentioned it, here is the code: http://pastebin.com/F6L7rWya This is the code in LegionPE that detects the spam message plus other things.