Security Blog
The latest news and insights from Google on security and safety on the Internet
An Update to End-To-End
16 décembre 2014
Posted by Stephan Somogyi, Product Manager, Security and Privacy
In June, we
announced and launched End-To-End
, a tool for those who need even more security for their communications than what we already provide. Today, we’re launching an updated version of our extension — still in alpha — that includes a number of changes:
We’re
migrating End-To-End to GitHub
. We’ve always believed strongly that End-To-End must be an open source project, and we think that using GitHub will allow us to work together even better with the community.
We’ve included several contributions from Yahoo Inc. Alex Stamos, Yahoo’s Chief Security Officer, announced at BlackHat 2014 in August that his team would be participating in our End-To-End project; we’re very happy to release the first fruits of this collaboration.
We’ve added more documentation. The
project wiki
now contains additional information about End-To-End, both for developers as well as security researchers interested in understanding better how we think about End-To-End’s security model.
We’re very thankful to all those who submitted bugs against the first alpha release. Two of those bugs earned a financial reward through our
Vulnerability Rewards Program
. One area where we didn’t receive many bug reports was in End-To-End’s new crypto library. On the contrary: we heard from several other projects who want to use our library, and we’re looking forward to working with them.
One thing hasn’t changed for this release: we aren’t yet making End-To-End available in the Chrome Web Store. We don’t feel it’s as usable as it needs to be. Indeed, those looking through the source code will see references to our key server, and it should come as no surprise that we’re working on one. Key distribution and management is one of the hardest usability problems with cryptography-related products, and we won’t release End-To-End in non-alpha form until we have a solution we’re content with.
We’re excited to continue working on these challenging and rewarding problems, and we look forward to delivering a more fully fledged End-to-End next year.
Reject the Unexpected - Content Security Policy in Gmail
16 décembre 2014
Posted by Danesh Irani, Software Engineer, Gmail Security
(Cross-posted from the
Gmail Blog
)
We know that the safety and reliability of your Gmail is super important to you, which is why we’re always working on security improvements like
serving images through secure proxy servers
, and
requiring HTTPS
. Today, Gmail on the desktop is becoming more secure with support for Content Security Policy (CSP). CSP helps provide a layer of defense against a common class of security vulnerabilities known as cross-site scripting (XSS).
There are many great extensions for Gmail. Unfortunately, there are also some extensions that behave badly, loading code which interferes with your Gmail session, or which compromises your email’s security. Gmail’s CSP helps protect you, by making it more difficult to load unsafe code into Gmail.
Most popular (and well-behaved) extensions have already been updated to work with the CSP standard, but if you happen to have any trouble with an extension, try installing its latest version from your browser’s web store (for example,
the Chrome Web Store
for Chrome users).
CSP is just another example of how Gmail can help make your email experience safer. For advice and tools that help keep you safe across the web, you can always visit the
Google Security Center
.
This post was updated on December 18th to add a description of the XSS defense benefit of CSP, and to more precisely define the interaction with extensions.
Are you a robot? Introducing “No CAPTCHA reCAPTCHA”
3 décembre 2014
Posted by Vinay Shet, Product Manager, reCAPTCHA
reCAPTCHA
protects the websites you love from spam and abuse. So, when you go online—say, for some last-minute holiday shopping—you won't be competing with robots and abusive scripts to access sites. For years, we’ve prompted users to confirm they aren’t robots by asking them to read distorted text and type it into a box, like this:
But, we figured it would be easier to just directly ask our users whether or not they are robots—so, we did! We’ve begun rolling out a new API that radically simplifies the reCAPTCHA experience. We’re calling it the “No CAPTCHA reCAPTCHA” and this is how it looks:
On websites using this new API, a significant number of users will be able to securely and easily verify they’re human without actually having to solve a CAPTCHA. Instead, with just a single click, they’ll confirm they are not a robot.
A brief history of CAPTCHAs
While the new reCAPTCHA API may sound simple, there is a high degree of sophistication behind that modest checkbox. CAPTCHAs have long relied on the inability of robots to solve distorted text. However,
our research recently showed
that today’s Artificial Intelligence technology can solve even the most difficult variant of distorted text at 99.8% accuracy. Thus distorted text, on its own, is no longer a dependable test.
To counter this, last year we
developed
an Advanced Risk Analysis backend for reCAPTCHA that actively considers a user’s entire engagement with the CAPTCHA—before, during, and after—to determine whether that user is a human. This enables us to rely less on typing distorted text and, in turn, offer a better experience for users. We talked about this in our
Valentine’s Day post
earlier this year.
The new API is the next step in this steady evolution. Now, humans can just check the box and in most cases, they’re through the challenge.
Are you
sure
you’re not a robot?
However, CAPTCHAs aren't going away just yet. In cases when the risk analysis engine can't confidently predict whether a user is a human or an abusive agent, it will prompt a CAPTCHA to elicit more cues, increasing the number of security checkpoints to confirm the user is valid.
Making reCAPTCHAs mobile-friendly
This new API also lets us experiment with new types of challenges that are easier for us humans to use, particularly on mobile devices. In the example below, you can see a CAPTCHA based on a classic
Computer Vision
problem of image labeling. In this version of the CAPTCHA challenge, you’re asked to select all of the images that correspond with the clue. It's much easier to tap photos of cats or turkeys than to tediously type a line of distorted text on your phone.
Adopting the new API on your site
As more websites adopt the new API, more people will see "No CAPTCHA reCAPTCHAs". Early adopters, like
Snapchat
,
WordPress
,
Humble Bundle
, and several others are already seeing great results with this new API. For example, in the last week, more than 60% of WordPress’ traffic and more than 80% of Humble Bundle’s traffic on reCAPTCHA encountered the No CAPTCHA experience—users got to these sites faster. To adopt the new reCAPTCHA for your website,
visit our site
to learn more.
Humans, we'll continue our work to keep the Internet safe and easy to use. Abusive bots and scripts, it’ll only get worse—sorry we’re (still) not sorry.
Libellés
#sharethemicincyber
#supplychain #security #opensource
android
android security
android tr
app security
big data
biometrics
blackhat
C++
chrome
chrome enterprise
chrome security
connected devices
CTF
diversity
encryption
federated learning
fuzzing
Gboard
google play
google play protect
hacking
interoperability
iot security
kubernetes
linux kernel
memory safety
Open Source
pha family highlights
pixel
privacy
private compute core
Rowhammer
rust
Security
security rewards program
sigstore
spyware
supply chain
targeted spyware
tensor
Titan M2
VDP
vulnerabilities
workshop
Archive
2024
déc.
nov.
oct.
sept.
août
juil.
juin
mai
avr.
mars
févr.
janv.
2023
déc.
nov.
oct.
sept.
août
juil.
juin
mai
avr.
mars
févr.
janv.
2022
déc.
nov.
oct.
sept.
août
juil.
juin
mai
avr.
mars
févr.
janv.
2021
déc.
nov.
oct.
sept.
août
juil.
juin
mai
avr.
mars
févr.
janv.
2020
déc.
nov.
oct.
sept.
août
juil.
juin
mai
avr.
mars
févr.
janv.
2019
déc.
nov.
oct.
sept.
août
juil.
juin
mai
avr.
mars
févr.
janv.
2018
déc.
nov.
oct.
sept.
août
juil.
juin
mai
avr.
mars
févr.
janv.
2017
déc.
nov.
oct.
sept.
juil.
juin
mai
avr.
mars
févr.
janv.
2016
déc.
nov.
oct.
sept.
août
juil.
juin
mai
avr.
mars
févr.
janv.
2015
déc.
nov.
oct.
sept.
août
juil.
juin
mai
avr.
mars
févr.
janv.
2014
déc.
nov.
oct.
sept.
août
juil.
juin
avr.
mars
févr.
janv.
2013
déc.
nov.
oct.
août
juin
mai
avr.
mars
févr.
janv.
2012
déc.
sept.
août
juin
mai
avr.
mars
févr.
janv.
2011
déc.
nov.
oct.
sept.
août
juil.
juin
mai
avr.
mars
févr.
2010
nov.
oct.
sept.
août
juil.
mai
avr.
mars
2009
nov.
oct.
août
juil.
juin
mars
2008
déc.
nov.
oct.
août
juil.
mai
févr.
2007
nov.
oct.
sept.
juil.
juin
mai
Feed
Follow @google
Follow
Give us feedback in our
Product Forums
.
Follow