Happening in ours too. Plus there's a couple *s in the most powerful of group. There's one that acts like a toddler, but is surprisingly he's an adult. Like the person below said, white listing is the best you can do.
honestly.. what is it a spy is supposed to gain?.. if they arent promoted members they cant see the battlefields, and if strategy arent discussed in guild chat i dont see it, which shouldnt be discussed 10min before gnw starts, but set in place before that time.. i dont see what they are supposed to spy on.. besides being able to see how many people are online?
They can see their position and if it's a spy that's of a higher level and if you want to stack, they can see if they are lower than the 3rd spot.