This video explains how the exploit that was on MMORPG.com was replicated:
This is the post from MMORPGhttp://www.mmorpg.com/black-desert-online/news/kakao-speaks-to-recent-unbanning-of-suspected-exploiters-1000044892
Send 1 worker to node. Run out of stamina.
Send 2-nd worker to same node. Run out of stamina on that one.
Regenerate all workers and send them again.
This is a scenario that can happen to anyone, how can this be specific steps