Aside from the use of dead drops, there is certainly a lot more we can learn from Robert Hannsen. Vernon's assessment is correct in that Hannsen's actions were most damaging to our national security. His spying was conducted over a period of two decades, and resulted in the deaths of intelligence agents. His is widely viewed as contributing towards the most damaging acts against or national security (Sanford & Arrigo, 2007).
We have discussed some of the motivating factors which may contribute to the insider threat. These factors may include personal gain or revenge. Hannsen's profile, however, seems to go much deeper than some of the causative factors we have discussed. I have very little institutional knowledge regarding Hannsen,
