Google Building more Private Web: Privacy Sandbox

Google talks about its approaches to a more private, yet financially sustainable Web.

Building a more private web    By Justin Schuh  Director, Chrome Engineering
Published Aug 22, 2019

Privacy is paramount to us, in everything we do. So today, we are announcing a new initiative to develop a set of open standards to fundamentally enhance privacy on the web. We’re calling this a Privacy Sandbox. 

Technology that publishers and advertisers use to make advertising even more relevant to people is now being used far beyond its original design intent - to a point where some data practices don’t match up to user expectations for privacy. Recently, some other browsers have attempted to address this problem, but without an agreed upon set of standards, attempts to improve user privacy are having unintended consequences.

First, large scale blocking of cookies undermine people’s privacy by encouraging opaque techniques such as fingerprinting. With fingerprinting, developers have found ways to use tiny bits of information that vary between users, such as what device they have or what fonts they have installed to generate a unique identifier which can then be used to match a user across websites. Unlike cookies, users cannot clear their fingerprint, and therefore cannot control how their information is collected. We think this subverts user choice and is wrong.

Second, blocking cookies without another way to deliver relevant ads significantly reduces publishers’ primary means of funding, which jeopardizes the future of the vibrant web. Many publishers have been able to continue to invest in freely accessible content because they can be confident that their advertising will fund their costs. If this funding is cut, we are concerned that we will see much less accessible content for everyone. Recent studies have shown that when advertising is made less relevant by removing cookies, funding for publishers falls by 52% on average.

So we are doing something different. We want to find a solution that both really protects user privacy and also helps content remain freely accessible on the web. At I/O, we announced a plan to improve the classification of cookies, give clarity and visibility to cookie settings, as well as plans to more aggressively block fingerprinting. We are making progress on this, and today we are providing more details on our plans to restrict fingerprinting. Collectively we believe all these changes will improve transparency, choice, and control.  .... "