Chrome OS marks a radical departure from today's operating systems because all the applications and even the user's data will reside in the cloud , noted Google Vice President Sundar Pichai. "We are initially focused on netbook-like form factors with a color display and real keyboard," Pichai said, though the company eventually wants Chrome OS "to run on full laptops and desktops."

In Sync with the Cloud

Google touted the enhanced stability and security that Chrome OS is expected to offer. For example, every time users restart their machines, the operating system will verify the integrity of its code and if it needs a fix or an upgrade, the appropriate version of the OS will download to the machine automatically.

"If your system has been compromised, it is designed to fix itself with a reboot," noted Caesar Sengupta, Google's group product manager. "While no computer can be made completely secure , we're going to make life much harder -- and less profitable -- for the bad guys."

Because of the changes that Google has made to the Chrome OS file system, all user data will become encrypted and synced back to the cloud, which offers security advantages, noted Engineering Director Matt Papakipos. So if the machine is lost, damaged or stolen, all the user's data is protected from theft and "will sync back to a new machine in a matter of seconds," he said.

Moreover, unlike traditional operating systems, Chrome OS doesn't trust the applications that users run on their machines. Instead, each app is contained within a security sandbox -- just like the Chrome web browser -- which makes it that much harder for malware and viruses to infect the computers running Chrome OS, Papakipos said.

All the software running on top of Chrome OS will consist of web applications exclusively. However, Pichai said Google will ensure that users have easy access to millions of web apps. (continued...)

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