Tag: Security
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Privacy Threat Model for Mobile
Evaluating privacy vulnerabilities in the mobile space can be a difficult and ad hoc process for developers, publishers, regulators, and researchers. This is due, in significant part, to the absence of a well-developed and widely accepted privacy threat model. With 1 million UDIDs posted on the Internet this past week, there is an urgent need…
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Firefox Changes its HTTPS User Interface… Again
A year and a half ago, I wrote about major changes to the way that Firefox indicates whether the connection to a web site is encrypted. I noted that, especially with the emergence of mobile browsers, the traditional “padlock icon” of standard SSL-secured connections and the “green glow” of Extended Validation was being implemented in…
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Going to the doctor and worrying about cybersecurity
For most people, going to the doctor means thinking about co-pays and when they’ll feel better. For me though, it means thinking about those plus the cyber security of the computer systems being used by the medical professionals. I’ve spent more time than usual visiting doctors recently. I broke my hand – sure I’ll tell…
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My Public Comments to the CA/Browser Forum Organizational Reform Working Group
Today, I submitted public comments to the CA/Browser Forum. CA/B Forum is an industry group started by Certificate Authorities — the companies that sell digital certificates to web sites so that your browser can encrypt your communications and can tell you whether it’s connecting to the genuine site. It is important that CAs do a…
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Applications and Appliances: A Conversation with Jonathan Zittrain
Professor Jonathan Zittrain is well-known for his concern that the general-purpose computer may be disappearing. The recent rise of app stores is putting his fears in a new light. After trading some thoughts about the issues in the blogosphere, he and I sat down at our respective keyboards for a conversation about the future of…
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Corruption Bureau assigns fox to guard henhouse
Recently I wrote about my discovery that someone erased evidence on an election computer in Cumberland County, NJ. After something went wrong in a Primary Election in June 2011, the Superior Court (the Hon. David E. Krell) had ordered the County Board of Elections to make the computer available for me (the Plaintiffs’ expert) to…
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Did NJ election officials fail to respect court order to improve security of elections?
Part 2 of 4 The Gusciora case was filed in 2004 by the Rutgers Constitutional Litigation Clinic on behalf of Reed Gusciora and other public-interest plaintiffs. The Plaintiffs sought to end the use of paperless direct-recording electronic voting machines, which are very vulnerable to fraud and manipulation via replacement of their software. The defendant was…
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DigiNotar Hack Highlights the Critical Failures of our SSL Web Security Model
This past week, the Dutch company DigiNotar admitted that their servers were hacked in June of 2011. DigiNotar is no ordinary company, and this was no ordinary hack. DigiNotar is one of the “certificate authorities” that has been entrusted by web browsers to certify to users that they are securely connecting to web sites. Without…
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"You Might Also Like:" Privacy Risks of Collaborative Filtering
Ann Kilzer, Arvind Narayanan, Ed Felten, Vitaly Shmatikov, and I have released a new research paper detailing the privacy risks posed by collaborative filtering recommender systems. To examine the risk, we use public data available from Hunch, LibraryThing, Last.fm, and Amazon in addition to evaluating a synthetic system using data from the Netflix Prize dataset.…