Damn, can you imagine that many cannons coming at your base? Run for the hills...
I don't know how many people realize this but Nexon didn't do anything months ago when dozens of bases started showing up with Industrial age running weeks before Industrial age was release. That was a prime oppertunity to ban every one of those players, and one which any company serious about preventing cheating would have drooled over and jumped on. Instead Nexon decided to do absolutely nothing.
That was months ago, and since then nothing has changed.
Oh but please be patient, they are working on it