After watching "Orange is the new black" I thought prison was a really really dark place. Sexual assault is probably worse than worrying about next guy stab you

After watching "Orange is the new black" I thought prison was a really really dark place. Sexual assault is probably worse than worrying about next guy stab you. While reading this article, I entertained the possibility of robot guards. The only problem is that prisoners can break them or alert the robots. Any idea how to keep these robots safe?