Tag: Privacy
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My Testimony on Behavioral Advertising
I’m testifying this morning at 10:00 AM (Eastern) at a Congressional hearing on “Behavioral Advertising: Industry Practices and Consumers’ Expectations”. It’s a joint hearing of two subcommittees of the House Committee on Energy and Commerce: the Subcommittee on Commerce, Trade, and Consumer Protection; and the Subcommittee on Communications, Technology, and the Internet . Witnesses at…
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On China's new, mandatory censorship software
The New York Times reports that China will start requiring censorship software on PCs. One interesting quote stands out: Zhang Chenming, general manager of Jinhui Computer System Engineering, a company that helped create Green Dam, said worries that the software could be used to censor a broad range of content or monitor Internet use were…
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Fingerprinting Blank Paper Using Commodity Scanners
Today Will Clarkson, Tim Weyrich, Adam Finkelstein, Nadia Heninger, Alex Halderman and I released a paper, Fingerprinting Blank Paper Using Commodity Scanners. The paper will appear in the Proceedings of the IEEE Symposium on Security and Privacy, in May 2009. Here’s the paper’s abstract: This paper presents a novel technique for authenticating physical documents based…
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More Privacy, Bit by Bit
Before the Holidays, Yahoo got a flurry of good press for the announcement that it would (as the LA Times puts it) “purge user data after 90 days.” My eagle-eyed friend Julian Sanchez noticed that the “purge” was less complete than privacy advocates might have hoped. It turns out that Yahoo won’t be deleting the…
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Can Google Flu Trends Be Manipulated?
Last week researchers from Google and the Centers for Disease Control unveiled a cool new research result, showing that they could gauge the level of influenza infections in a region of the U.S. by seeing how often people in those regions did Google searches for certain terms related to the flu and flu symptoms. The…
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Abandoning the Envelope Analogy (What Your Mailman Knows Part 2)
Last time, I commented on NPR’s story about a mail carrier named Andrea in Seattle who can tell us something about the economic downturn by revealing private facts about the people she serves on her mail route. By critiquing the decision to run the story, I drew a few lessons about the way people value…
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What Your Mailman Knows (Part 1 of 2)
A few days ago, National Public Radio (NPR) tried to offer some lighter fare to break up the death march of gloomier stories about economic calamity. You can listen to the story online. The story’s reporter, Chana Joffe-Walt, followed a mail carrier named Andrea on her route around the streets of Seattle. The premise of…
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It can be rational to sell your private information cheaply, even if you value privacy
One of the standard claims about privacy is that people say they value their privacy but behave as if they don’t value it. The standard example involves people trading away private information for something of relatively little value. This argument is often put forth to rebut the notion that privacy is an important policy value.…
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Phorm's Harms Extend Beyond Privacy
Last week, I wrote about the privacy concerns surrounding Phorm, an online advertising company who has teamed up with British ISPs to track user Web behavior from within their networks. New technical details about its Webwise system have since emerged, and it’s not just privacy that now seems to be at risk. The report exposes…
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Bad Phorm on Privacy
Phorm, an online advertising company, has recently made deals with several British ISPs to gain unprecedented access to every single Web action taken by their customers. The deals will let Phorm track search terms, URLs and other keywords to create online behavior profiles of individual customers, which will then be used to provide better targeted…