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An Unprecedented Look into Utilization at Internet Interconnection Points

Freedom to Tinker - Fri, 2016/03/11 - 10:00
Measuring the performance of broadband networks is an important area of research, and efforts to characterize the performance of these networks continues to evolve. Measurement efforts to date have largely relied on in­home devices and are primarily designed to characterize access network performance. Yet, a user’s experience also relies on factors that lie upstream of ISP access networks, which […]

Apple, FBI, and Software Transparency

Freedom to Tinker - Thu, 2016/03/10 - 09:00
The Apple versus FBI showdown has quickly become a crucial flashpoint of the “new Crypto War.” On February 16 the FBI invoked the All Writs Act of 1789, a catch-all authority for assistance of law enforcement, demanding that Apple create a custom version of its iOS to help the FBI decrypt an iPhone used by one of the San […]

Apple/FBI: Freedom of speech vs. compulsion to sign

Freedom to Tinker - Fri, 2016/03/04 - 10:00
This week I signed the Electronic Frontier Foundation’s amicus (friend-of-the-court) brief in the Apple/FBI  iPhone-unlocking lawsuit.  Many prominent computer scientists and cryptographers signed: Josh Aas, Hal Abelson, Judy Anderson, Andrew Appel, Tom Ball (the Google one, not the Microsoft one), Boaz Barak, Brian Behlendorf, Rich Belgard, Dan Bernstein, Matt Bishop, Josh Bloch, Fred Brooks, Mark Davis, […]

What Your ISP (Probably) Knows About You

Freedom to Tinker - Fri, 2016/03/04 - 02:27
Earlier this week, I came across a working paper from Professor Peter Swire—a highly respected attorney, professor, and policy expert.  Swire’s paper, entitled “Online Privacy and ISPs“, argues that ISPs have limited capability to monitor users’ online activity. The paper argues that ISPs have limited visibility into users’ online activity for three reasons:  (1) users […]

An analogy to understand the FBI’s request of Apple

Freedom to Tinker - Mon, 2016/02/22 - 09:00
After my previous blog post about the FBI, Apple, and the San Bernadino iPhone, I’ve been reading many other bloggers and news articles on the topic. What seems to be missing is a decent analogy to explain the unusual nature of the FBI’s demand and the importance of Apple’s stance in opposition to it. Before I dive […]

Apple, the FBI, and the San Bernadino iPhone

Freedom to Tinker - Wed, 2016/02/17 - 13:27
Apple just posted a remarkable “customer letter” on its web site. To understand it, let’s take a few steps back. In a nutshell, one of the San Bernadino shooters had an iPhone. The FBI wants to root through it as part of their investigation, but they can’t do this effectively because of Apple’s security features. […]

How Does Zero-Rating Affect Mobile Data Usage?

Freedom to Tinker - Thu, 2016/02/11 - 00:08
On Monday, the Telecom Regulatory Authority of India (TRAI) released a decision that effectively bans “zero-rated” Internet services in the country. While the notion of zero-rating might be somewhat new to many readers in the United States, the practice is common in many developing economies. Essentially, it is the practice by which a carrier creates an […]

The Princeton Bitcoin textbook is now freely available

Freedom to Tinker - Tue, 2016/02/09 - 14:17
The first complete draft of the Princeton Bitcoin textbook is now freely available. We’re very happy with how the book turned out: it’s comprehensive, at over 300 pages, but has a conversational style that keeps it readable. If you’re looking to truly understand how Bitcoin works at a technical level and have a basic familiarity […]
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