Indeed, who knows. But would it benefit the country if they released their ops reports?
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.
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.