The IAB says Mozilla's decision to not use third-party tracking cookies as a default setting will be detrimental to small businesses who rely on ad networks. "Small businesses can't afford to hire large advertising sales teams. Advertisers can't afford the time to make individual buys across thousands of websites. The technology that brings these two interests together is the third-party cookie," wrote IAB President and CEO Randall Rothenberg. Mozilla Chief Technology Officer Brendan Eich says the company has "no intentions to harm small businesses or the consumer online experience," adding that Firefox users retain the option of enabling third-party cookies.