Latest News

  • [GRABBYpromojpg]

    What Facebook Apps Know

    The Wall Street Journal analyzed 100 of the most used applications that connect to Facebook's social-networking platform to see what data they sought from people. See what permissions they ask users to grant them.

  • [SURVEILLANCE-PR]

    Surveillance Catalog

    Documents obtained by The Wall Street Journal open a rare window into a new global market for the off-the-shelf surveillance technology that has arisen in the decade since the terrorist attacks of Sept. 11, 2001.

  • [wtkdeco]

    See What They Know

    The Journal analyzed the tracking files installed by the 50 most popular websites and built an index of visitors' exposure to monitoring. See the results.

  • Video: A Guide to Cookies

    It's rarely a coincidence when you see Web ads for products that match your interests. The Journal explains "behavioral targeting," and how advertisers use cookies to track your online habits from site to site.

  • [wtkdatabase]

    Children's Sites: The Results

    The Journal analyzed the tracking files installed by the 50 of the most popular U.S. websites for children and teenagers and built an "exposure index." See the findings.

  • [mobile]

    Mobile Apps: The Results

    The Journal analyzed the data collected and shared by 101 popular apps on iPhone and Android phones, including the Journal's own app. See the results.

  • [OB-JL599_WTKTRA_D_20100803212228.jpg]

    One Smart Cookie

    New York ad company [x+1] made predictions about users based on just one click on a website. Read more about the users and the companies' assumptions.

  • [rapleaf]

    Cracking the Code

    RapLeaf ties people's email addresses to a profile about them and uses that profile to target ads. See data RapLeaf had on one user and how its system works.

More From Digits

The Original Series

What You Can Do

Latest Tweets

The Great Privacy Debate

Partner Center
An Advertising Feature