Assuming that computer science books are banned because they could be used for getting access to unauthorized systems within the prison, they should also ban books on plumbing because a wrench could be used to hit somebody, or books on math as well because what if a prisoner finds a way to create a quantum tunnel outside of the prison just with some simple equations?

I'm consistently surprised by how idiotic our prison system in the US is. It seems to have two mantras: "the more the merrier" and "punish, not correct." I guess that's what happens when you have something as dumbfoundingly stupid as private prisons.