I am not allowed to have any online presence using my real name for the next five years (I was working in digital intelligence, it's complicated). This confuse

I am not allowed to have any online presence using my real name for the next five years (I was working in digital intelligence, it's complicated). This confuses and intrigues me. What does an "online presence" mean? Can you have a personal website? A Facebook account? An e-mail address? Did you accept these terms when you started or were you given the restriction when leaving? Are the consequences of breaking the contract civil or criminal? If you legally change your name, can you use that new name online before the 5 years are up? It doesn't make any sense. How do they expect to recruit talented people with such a restriction? The mind boggles.