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"Google today announced it is hosting its fourth Pwnium competition, aptly named Pwnium 4, this March. The security contest's main focus will be Chrome OS, for which the company will be offering up to a total of $2.71828 million in rewards for security researchers (Google loves using geeky numbers for its prizes, such as those related to leet and pi \u2013 this one is for the mathematical constant e).\r\n\r\nThe breakdown for the winnings are the same as last year:\r\n\r\n\t$110,000 USD: Browser or system-level compromise in guest mode or as a logged-in user, delivered via a web page.\r\n\t$150,000 USD: Compromise with device persistence: guest to guest with interim reboot, delivered via a web page.\r\n\r\nAgain, just like in 2013, if you can hack Chrome OS, you'll walk away with a six-figure check. Furthermore, this year Google is also planning to give out significant bonuses for demonstrating &amp;quot;a particularly impressive or surprising exploit.&amp;quot; The company offers three examples: defeating kASLR, exploiting memory corruption in the 64-bit browser process, or exploiting the kernel directly from a renderer process.\r\n\r\nAlso new in 2014, security researchers can choose between an ARM-based Chromebook (the WiFi-only HP Chromebook 11) or the Acer C720 Chromebook (the WiFi-only 2GB version) that is based on the Intel Haswell microarchitecture. Last year, only Intel-based Chrome OS devices were allowed to be hacked for prize money.\r\n\r\nThere is one other rule worth emphasizing: the attack must be demonstrated against one of the two aforementioned devices running whatever the Chrome OS stable version is at the time. All software included with the default installation of those devices may be used as part of the attack.\r\n\r\nThe full exploit must be given to Google, with explanations for all individual bugs used (all of which must be unknown), and exploits should be served from a password-authenticated and HTTPS-supported Google App Engine URL. Last year, no exploits for Chrome OS were found.\r\n\r\nYou can read the full list of rules here and register to get your timeslot by sending an e-mail to security@chromium.org before 5:00 PM PST on March 10, 2014.\r\n\r\nTop Image Credit: Nauris Mozoleff"^^<http://www.w3.org/2001/XMLSchema#string>
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