Idea: Corporate Espionage

I had this idea the other day and think its quite good, although it could be improved.
My idea is that all corporations have an espionage unit, which is invisible and doesn't have a mark of nationality. I was thinking they could go into a city and either sabotague thier rivals buisness (runs at a loss for a few turns?) or can destroy the HQ.

Aluminion Co. can only do it to Mining Inc.
Cereal Mills to Sid's Sushi and Standard Ethanol
Civilized Jewlers to Mining Inc.
Create Con. to Mining Inc.
Mining Ic. to Create Con, Aluminion Co. and Civilized Jewlers
Sid's Sushi Co. to Cereal Mills and Standard Ethanol
Standord Ethanol to Cereal Mills and Sids Sushi Co.

Any ideas of how this could be done/improved or whether its already been done?

EDIT: Never Mind-Found several mods similar to this.