Acxiom is one of the largest companies that collects and sells customer information for marketing purposes. Levi Sumagaysay is a senior reporter at MarketWatch in San Francisco. A longtime Silicon ...

As FTC chairman Jon Leibowitz says, Acxiom and its peers are "the unseen cyberazzi who collect information on all of us," and we should have the right to know what they've found.

Then reach out to these platforms and request that they remove your information. Many websites have dedicated privacy policies and procedures for such requests. Also, consider opting out of data ...