2. Filter out all of the sensitive stuff
3. Generate a report of the findings for non-secret consumption.
Now how to get it onto the main network for publishing and distribution. Could use a thumbdrive, but it could have a virus on it. Could do some sort of sneakernet, but what if you have dozens of such reports to create on a daily basis?
I’m no IT security expert. All I know is to be secure from any/all internet hacking you need to be cut off from the internet altogether.