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Undeletable Cookies Used to Track Us; Top Senate Voice on Spying and Environment Voted Out
Verizon and AT&T Using Undeletable ‘Supercookies’ to Track Customers. The tracking codes—called Unique Identifier Headers, or X-UIDH—are installed on every unencrypted web page that users of both services visit on their mobile devices, which in turn allows Verizon and AT&T to monitor their customers’ browsing history and create permanent identification profiles of their habits, likes, and interests. Once installed, the supercookies cannot be deleted nor evaded, even if customers clear their cookies, use private browsing modes, disable third-party cookies, or select “Do Not Track” in their settings.
Mark Udall, Leading Senate Voice on NSA Surveillance and Environment, Ousted in Heated Colorado Race. Outside groups poured millions of dollars into the campaigns.
