Since Supreme Ruler 2010 will be a heavily mod'able game, there are certainly opportunities for players to change the basic gameplay, and also to unbalance the game in various ways. I take it this is what you are referring to?
There are a few things we are going to disallow with fixed rules, but others - especially in the equipment file and map editor - are open for user editing. If a player wants to really screw things up, well, that's their decision.
Multiplayer games will have more sophisticated checking, of course, and an MP game is to be played with custom files then all players will be informed that a custom rule file is being used - they should accept it at their own risk
Are there other types of 'exploits' you had in mind?