Ad Networks Beware: Firefox to Block Third-Party Cookies

New policy could squeeze online behavioral advertising

The Interactive Advertising Bureau' lashed out Saturday at a new Firefox policy to block third-party cookies, effectively cutting off ad networks' ability to track users. That could be put a crimp in the growing online behavioral advertising business, but give privacy advocates a victory in their attempts to give users more control over their online information.

Mike Zaneis, the organization's svp and general counsel tweeted that Mozilla's new policy was nothing less than "a nuclear first strike against the ad industry."

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