Charter-ing a New Course in Behavioral Targeting
Friday, May 16th, 2008This week broadband provider Charter Communications revealed its plans to begin sharing its customers’ Web traffic with NebuAd, an advertising network. NebuAd’s service works by monitoring individuals’ online activities and creating profiles of those individuals’ interests. NebuAd then uses the profiles to serve targeted advertisements on the Web. Charter, with over 5 million subscribers, is the largest U.S. ISP to announce a deal with NebuAd thus far.
As we discussed in our comments to the FTC last month, this model – where an ad network strikes a deal with an ISP that allows the network to conduct “deep packet inspection” (or “DPI”) of individual Web traffic streams – raises numerous privacy questions. The main difference between these new ad networks and other kinds of online ad networks is that DPI-based ad networks may potentially gain access to all or substantially all of an individual’s Web traffic as it traverses the ISP’s infrastructure, including traffic to all political, religious, and other non-commercial sites (even those that do not use cookies and those that do not deliver ads). The prospect of having a third party handling all of this data likely defies most users’ expectations that the entire body of their Web surfing habits is not generally monitored by anyone, much less a third-party ad network they’ve never heard of.
One of the biggest outstanding questions about DPI-based ad networks is the legal basis that ISPs are using to justify the transfer of their subscribers’ data to a third-party ad network. In a letter addressed to Charter’s CEO, Rep. Ed Markey and Rep. Joe Barton have inquired about how the NebuAd deal can be reconciled with the Cable Act of 1984, which allows cable operators to share subscriber data with third parties only when subscribers give their prior approval. We are anxious to see Charter’s response.
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