Not an expert, but as secret stuff gets leaked it tends to create huge public discourse and leads to political action.
Knowledge about their actions does seem to have an effect on the country. Secret service staff would probably not necessarily evaluate it as a good effect though.
> Knowledge about their actions does seem to have an effect on the country.
Can you give me an example?
Take the latest Wikileaks Vault thing for instance. That was a leak that created public discourse, what was the effect?
I still don't trust my iPhone and pretty much most of the software I use, were any 3 letter agency looking to get me.