From a link posted about it earlier:
A key point made in the e-mail is that Childs' managers and coworkers all knew that he was the only person with administrative access to the network. In fact, it was apparently known and accepted in many levels of the San Francisco IT department. Again, quoting from the e-mail:
“This is where it gets tricky for the prosecution, IMO, because the localized authentication, with Terry as sole administrator, has been in place for months, if not years. His coworkers knew it (my coworkers and I were told many times by Terry's coworkers, 'If your request has anything to do with the FiberWAN, it'll have to wait for Terry. He's the only one with access to those routers'). His managers knew it.
"Other network engineers for the other departments of the City knew it. And everyone more or less accepted it.
"No one wanted the thing to come crashing down because some other network admin put a static route in there and caused a black hole; on the other hand, some of us did ask ourselves, 'What if Terry gets hit by a truck?' If a configuration is known and accepted, is that 'tampering'?”
My source appears to believe that Childs' motivation was the antithesis of tampering, and that Childs did everything possible to maintain the integrity of the network, perhaps to a fault:
“He's very controlling of his networks -- especially the FiberWAN. In an MPLS setup, you have 'provider edge' (PE) routers and 'customer edge' (CE) routers. He controlled both PE and CE, even though our department was the customer; we were only allowed to connect our routers to his CE routers, so we had to extend our routing tables into his equipment and vice versa, rather than tunneling our routing through the MPLS system.”
He shouldn't be in gaol at all!
He should be free to hold the secrets he was entrusted with -until payment was made for the knowledge he was allowed to leave his employment with.
You don't sack a man in that position until you have made him release his secrets. Once you stop paying him you can't expect any different.