It's not really like you can cheat in multiplayer. Who cares if you cheat in singleplayer?
Well you see, when you apply to join an EUIV multiplayer game, the GM will perform a serious of rigorous backgrounds checks that include your total logged hours in EUIV, your history of possibly faking achievements, your credit rating, and your criminal record. If you're found to have committed the heinous crime of posting in the "Post your EUIV Empire" thread without providing adequate proof of ironman status, not only will your application to join the mp game be rejected but the GM will most likely contact your educational establishment and/or place of employment to warn them about your misdeeds. You'll then almost definitely be expelled/fired.
So if a seedy-looking fellow in a trenchcoat approaches you in a back alley and offers you a taste of SAM, just say "NO!", kids.