"Drewry said that Chrome OS featured auto-updating and sandboxing features that reduce exposure to malware. Like the Chrome web browser, Chrome OS was a “safe browsing” feature where it will warn the user if they attempt to go to a known malware-spreading website. Overall, Drewry described Chrome OS as an “hardened” OS.
However, the Google Netbook can be set into “Developer Mode” where some of the strict security features on Chrome OS can be disabled. “Developer Mode” is activated by a hidden switch under the netbook’s battery. This will allow developers to work freely without the security measures, or as Drewry put it, “do whatever you want.”
To further secure the Google Netbook, it will include a Trusted Platform Module (TPM), a secure cryptoprocessor that assists in disk encryption. As always, Drewry said that Google will constantly be updating Chrome OS with security updates from feedback from developers.