tracking

What they know

The Wall Street Journal’s documents the new, cutting-edge uses of Internet-tracking technology. The Journal analyzed the tracking files installed on people’s computers by the 50 most popular U.S. websites, plus WSJ.com. The Journal also built an “exposure index” to determine the degree to which each site exposes visitors to monitoring.

A Death in the Database

Last Thursday, Mike Seay received a mailer from OfficeMax addressed to “Mike Seay/Daughter Killed in Car Crash/Or Current Business.” Even in a society grown numb to targeted marketing, the story of the letter has prompted outrage and confusion. It has raised new questions about what types of information data brokers gather and why.

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