2012-12-03, 12:22 AM
I really don't agree with your choice of words. "Completely" is very specific. I can think of 20 methods off the top of my head to hack a forum, and none of the above posted are included. Security is a process, not a product. The above might help to some degree, but it won't prevent your forum from being hacked.
No longer involved in the MyBB project.