[Aloofi]

I've been thinking about the Alien thing, and I have reached the conclusion that if an Alien civilization have the capability of coming all the way to here, it have to be an agressive civilization, because "thirst for scientific knowledge" is not enough to fund the cost of R&D of space exploration tech. They have to have a major motive pushing them to the stars.

Now, they also need to have a very advance industrial infrastructure, and what's the most advance/powerful/capable economical organization?
Yes, the evil corporations.
This one scenario of first contact:

An scout vessel from Race X comes to our beloved solar system. It chart the system, run their planetary mineral scanners, and deploy a couple guiding beacons.
Back on Planet X, MegaCorporation Z buys the mining rights for our solar system, and ask for a loan from the Galactic Bank to initiate mining operations. Mega Z starts minig first the rich mineral deposits in Mars, but they soon discover that our planet is even richer , and they start to plan a mining colony over here. But, of course, the native population of Earth is going to be problem, so they send a drone to drop us a Virus Bomb V. After that they land a couple of Corporate Marines to claim the planet and make sure that we were wiped out, then they collect all the minerals found in our cities, especially the gold from Fort Knox, and finally they start building a mining complex to mine our planet's core, financed by the Galactic Bank.