1. This will be solved by the IT department
Even the best IT guy cannot prevent data leakage from corporate infrastructure if the attack is conducted through an unskilled employee. Just like a security agency worker can’t prevent key theft or employee magnetic card entry.
A secure network is a necessary basis (as well as a lock in the door), but the most common attack is conducted in a different way than through corporate systems. One of the most famous hackers, Kevin Mitnick, describes in his book “The Art of Deception”, many surprisingly simple tricks on how to get data that should be kept secret. The majority of them have one thing in common - getting information from uneducated staff who didn’t even think they were doing something wrong.