Chromium Blog
News and developments from the open source browser project
Pwnium V: the never-ending* Pwnium
Tuesday, February 24, 2015
[Cross-posted on the
Google Online Security Blog
]
Posted by
Tim Willis, Hacker Philanthropist, Chrome Security Team
Around this time each year we announce the rules, details and maximum cash amounts we’re putting up for our
Pwnium competition
. For the last few years we put a huge pile of cash on the table (last year it was
e million
) and gave researchers one day during
CanSecWest
to present their exploits. We’ve received some great entries over the years, but it’s time for something bigger.
Starting today, Pwnium will change its scope significantly, from a single-day competition held once a year at a security conference to a year round, worldwide opportunity for security researchers.
For those who are interested in what this means for the Pwnium rewards pool, we crunched the numbers and the results are in: it now goes all the way up to $∞ million*.
We’re making this change for a few reasons:
Removing barriers to entry:
At Pwnium competitions, a security researcher would need to have a
bug chain
in March, pre-register, have a physical presence at the competition location and hopefully get a good timeslot. Under the new scheme, security researchers can submit their bugs year-round through the
Chrome Vulnerability Reward Program
(VRP) whenever they find them.
Removing the incentive for bug hoarding:
If a security researcher was to discover a Pwnium-quality bug chain today, it’s highly likely that they would wait until the contest to report it to get a cash reward. This is a bad scenario for all parties. It’s bad for us because the bug doesn’t get fixed immediately and our users are left at risk. It’s bad for them as they run the real risk of a bug collision. By allowing security researchers to submit bugs all year-round, collisions are significantly less likely and security researchers aren’t duplicating their efforts on the same bugs.
Our researchers want this:
On top of all of these reasons, we asked our handful of participants if they wanted an option to report all year. They did, so we’re delivering.
Logistically, we’ll be adding Pwnium-style bug chains on Chrome OS to the
Chrome VRP
. This will increase our top reward to $50,000, which will be on offer all year-round. Check out our
FAQ
for more information.
Happy hunting!
* Our lawyercats wouldn’t let me say “never-ending” or “infinity million” without adding that “this is an experimental and discretionary rewards program and Google may cancel or modify the program at any time.” Check out the reward eligibility requirements on the
Chrome VRP page
.
Beta Channel for the Android WebView
Friday, February 13, 2015
[Cross-posted on the
Android Blog
]
Many Android apps use a
WebView
for displaying HTML content. In Android 5.0 Lollipop, Google has the ability to update WebView independently of the Android platform. Beginning today, developers can use a new beta channel to test the latest version of WebView and provide feedback. WebView updates bring numerous bug fixes, new web platform APIs and updates from Chromium. If you’re making use of the WebView in your app, becoming a beta channel tester will give you an early start with new APIs as well as the chance to test your app before the WebView rolls out to your users. The first version offered in the beta channel will be based on Chrome 40 and you can find a full list of changes on the chromium
blog
entry. To become a beta tester, join the
community
which will enable you to sign up for the Beta program; you’ll then be able to install the beta version of the WebView via the Play Store. If you find any bugs, please file them on the
Chromium issue tracker
.
Posted by
Richard Coles - Software Engineer, Google London
Hello HTTP/2, Goodbye SPDY
Monday, February 9, 2015
HTTP
is the fundamental networking protocol that powers the web. The majority of sites use version 1.1 of HTTP, which was defined in 1999 with
RFC2616
. A lot has changed on the web since then, and a new version of the protocol named
HTTP/2
is well on the road to standardization. We plan to gradually roll out support for HTTP/2 in Chrome 40 in the upcoming weeks.
HTTP/2’s primary changes from HTTP/1.1 focus on improved performance. Some
key features
such as multiplexing, header compression, prioritization and protocol negotiation evolved from work done in an earlier open, but non-standard protocol named
SPDY
. Chrome has supported SPDY since Chrome 6, but since most of the benefits are present in HTTP/2, it’s time to say goodbye. We plan to remove support for SPDY in early 2016, and to also remove support for the TLS extension named
NPN
in favor of
ALPN
in Chrome at the same time. Server developers are strongly encouraged to
move to
HTTP/2 and ALPN.
We’re happy to have contributed to the open standards process that led to HTTP/2, and hope to see wide adoption given the broad industry engagement on standardization and implementation. We also look forward to further advancements in fundamental Internet protocols that lead to a faster and more secure Internet for everyone.
Update: Beginning May 15, Chrome will
no longer support SPDY
.
Update: To better align with Chrome's release cycle, SPDY and NPN support will be removed with the release of Chrome 51
.
Posted by Chris Bentzel, Multiplexing Manager and Bence Béky, HTTP/2 Enabler
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