There's one thing that is easy to do and that governments don't seem to do.
People tend to align with the body that they are part of. Look at the Snowden case. Snowden was a contractor. He was not a government employee. There's a good chance that if he had been a government employee, he would have felt more like he was part of the system, and the chances that he would go against the system would have been lower.
In cybersecurity, don't hire contractors. You should make it possible to pay cybersecurity professionals higher salaries than what government used to pay, but make them part of the system.