Its amazing how many hacks, even high profile ones do involve the computer skills of a 10 year old. There was one a few years ago where 3 teenagers broke into DoD servers but all they really did was social engineer one low level gaming company employee to get their login to try see a games files early, once that was done it turned out all the info neccesary to escalate permissions was already available via that employees credentials completely unsecured, then it turned out the company was contracting for the army and had access to some of their servers and subsiquently the DoD, again, completely unsecured.

Once you're inside the house none of the doors are locked and sprawling organisations get awfully careless about who they give a key to the front door.