The thinking behind Google Crome OS:

Secure Your Systems Permanently: Our secure service offers centralized control of security for all managed computers and replaces the anti-virus software, spyware scanners, and desktop firewalls that are often cobbled together, with a cohesive security management solution. Most importantly, the computer's security is kept consistent from the office to the home to remote access locations anywhere in the world. As long as the computer is connected to the Internet, anti-virus, anti-spyware, and firewall updates are sent automatically. This provides continuous protection , as well as peace of mind for the user.

Our patch service performs daily scans on computers, checking for compliance with the latest software updates and proactively alerting when those patches are available. A technician can then select and deploy patches to computers at his or her convenience, no matter where they are in the world.