Category: Uncategorized
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Is SafeMedia a Parody?
[UPDATE (Dec. 2011): I wrote the post below a few years ago. SafeMedia’s website and product offerings have changed since then. Please don’t interpret this post as a commentary on SafeMedia’s current products.] Peter Eckersley at EFF wrote recently about a new network-filtering company called SafeMedia that claims it can block all copyrighted material in…
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Cablevision and Anti-Efficiency Policy
I wrote recently about the Cablevision decision, in which a judge appeared to draw a line between two kinds of Digital Video Recorder (DVR) technologies. (DVRs let home viewers record TV shows and play them later.) The judge found unlawful a Remote Storage DVR (RS-DVR) in which recorded shows are captured and stored in the…
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Software HD-DVD/Blu-ray Players Updated
The central authority that runs AACS (the anticopying/DRM system used on commercial HD-DVD and Blu-ray discs) announced [April 6, 2007 item] last week the reissue of some software players that can play the discs, “[i]n response to attacks against certain PC-based applications”. The affected applications include WinDVD and probably others. Recall that analysts had previously…
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Why So Many False Positives on the No-Fly List?
Yesterday I argued that Walter Murphy’s much-discussed encounter with airport security was probably just a false positive in the no-fly list matching algorithm. Today I want to talk about why false positives (ordinary citizens triggering mistaken “matches” with the list) are so common. First, a preliminary. It’s often argued that the high false positive rate…
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Walter Murphy Stopped at Airport: Another False Positive
Blogs are buzzing about the story of Walter Murphy, a retired Princeton professor who reported having triggered a no-fly list match on a recent trip. Prof. Murphy suspects this happened because he has given speeches criticizing the Bush Administration. I studied the no-fly list mechanism (and the related watchlist) during my service on the TSA’s…
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Judge Geeks Out, Says Cablevision DVR Infringes
In a decision that has triggered much debate, a Federal judge ruled recently that Cablevision’s Digital Video Recorder system infringes the copyrights in TV programs. It’s an unusual decision that deserves some unpacking. First, some background. The case concerned Digital Video Recorder (DVR) technology, which lets cable TV customers record shows in digital storage and…
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EMI To Sell DRM-Free Music
EMI, the world’s third largest record company, announced yesterday that it will sell its music without DRM (copy protection) on Apple’s iTunes Music Store. Songs will be available in two formats: the original DRMed format for the original $0.99 price, or a higher-fidelity DRM-free format for $1.29. This is a huge step forward for EMI…
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FreeConference Suit: Neutrality Fight or Regulatory Squabble?
Last week FreeConference, a company that offers “free” teleconferencing services, sued AT&T for blocking access by AT&T/Cingular customers to FreeConference’s services. FreeConference’s complaint says the blocking is anticompetitive and violates the Communications Act. FreeConference’s service sets up conference calls that connect a group of callers. Users are given an ordinary long-distance phone number to call.…
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Judge Strikes Down COPA
Last week a Federal judge struck down COPA, a law requiring adult websites to use age verification technology. The ruling by Senior Judge Lowell A. Reed Jr. held COPA unconstitutional because it is more restrictive of speech (but no more effective) than the alternative of allowing private parties to use filtering software. This is the…
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OLPC: Too Much Innovation?
The One Laptop Per Child (OLPC) project is rightly getting lots of attention in the tech world. The idea – putting serious computing and communication technologies into the hands of kids all over the world – could be transformative, if it works. Recently our security reading group at Princeton studied BitFrost, the security architecture for…