Google Chrome is already featured in the Pwn2Own competition this year. Pwnium 3 will have a new focus: Chrome OS. The attack must be demonstrated against a base (WiFi) model of the Samsung Series 5 550 Chromebook, running the latest stable version of Chrome OS. Any installed software (including the kernel and drivers, etc.) may be used to attempt the attack. Exploits should be served from a password-authenticated and HTTPS-supported Google property, such as Google App Engine.”]
Source: https://blog.chromium.org/2013/01/show-off-your-security-skills-pwn2own.html