Pwnium 4 hacking contest for Chrome OS: Google will paid $2.71828 million as a rewards Last date march 10th.

For best Security practice Google arranged regular competitions to learn from security researchers This year Google announces Pwnium 4 hacking contest for Chrome OS this will again set sights on Chrome OS, and will be hosted in March at the CanSecWest security conference in Vancouver.

Chrome OS Competition Levels:

• $110,000 USD: browser or system-level compromise in guest mode or as a logged-in user, delivered via a web page.
• $150,000 USD: compromise with device persistence: guest to guest with interim reboot, delivered via a web page. 

In 2014 Google will also pay significant bonuses for demonstrating a particularly impressive or surprising exploit. Like defeating kASLR, exploiting memory corruption in the 64-bit browser process, exploiting the kernel directly from a renderer process.Source.

Machine Used This Time.

ARM-based Chromebook, the HP Chromebook 11 (WiFi), or the Acer C720 Chromebook (2GB WiFi) that is based on the Intel Haswell microarchitecture.

Registration & Rules:

• e-mail pwnium4@chromium.org. Registration will close at 5:00 p.m. PST Monday, March 10th, 2014.