GreenBorder First Step Towards Google FREE Antivirus?

Seems like Google is now acquiring till they drop, the latest one to date being security software provider GreenBorder (I think if I did not miss anything).

GreenBorder is a security software company that specializes in using virtualization to create safe zones for online activities for Internet users. GreenBorder lets computer operators combine hardware and software to create “virtual” machines where tasks such as reading e-mail or exploring websites can be done without exposing systems to viruses or other malicious programs. Web-based programs that try to access files or computer registries are stopped from leaving what are commonly referred to as online “sandboxes” created by GreenBorder. The virtual “sandboxes” vanish at the end of each session, taking hacker assaults such as spyware, viruses, and trojans with them.

So basically, they are providing a good and anonymous security solution.

Now that Google aquired them, what will happen and what is motivating Google choice?