Not much is known about this company. It's not even named. She calls it "The Corporation" in resident evil 4. What is for sure is Ada was working as a double agent, in the end giving up and ultimately betraying Wesker. That gives us the hint that this company is against Ablert Wesker, his ideals and the thought of bringing Umbrella back. There is a possibility that they are against the Las Plagas as well. This is what we have to go on and this is where we are keeping it.