There's a known exploit with the spawner mining radius being used to find enemies setting up cannons with the radius being nearly 23(ish) chunks. The diameter being roughly 45 Chunks this can be used to check a very large area very quickly. To counter this the best way i would recommend to fix this is to set a base region with W/E. Then have the plugin that disallows mining of spawners only affect it when enemies are within the Base Region.
#7916 - Status: rejected
4 years ago by MasterShade for Improvements