Just FYI:
Someone "teleporting into your base and stealing everything" probably isn't a wallhack. It's probably an admin using the teleport.topos command. The coordinate system is easy to figure out. Even if you can't be bothered, you just stand on one side, get coordinates, stand on the other side, get coordinates, and average them out. Poof, you're in the middle. Adjust elevation for different levels.
There are also plugins to grand admins access to all doors. Depending on your server's plugins, admins can also add themselves to your doorshare list.
The result?
Enter any base with no explosives. Definitely cheating, but shitty admins are going to do that. The best way to punish them is to find a different server so they don't have anyone to pick on.
or someone simply replaces the walls he blow up, also a good method