Wired reports Verizon's 'Perma-Cookie' Is a Privacy-Killing Machine.
Verizon Wireless has been subtly altering the web traffic of its wireless customers for the past two years, inserting a string of about 50 letters, numbers, and characters into data flowing between these customers and the websites they visit.
The company—one the country’s largest wireless carriers, providing cell phone service for about 123 million subscribers—calls this a Unique Identifier Header, or UIDH. It’s a kind of short-term serial number that advertisers can use to identify you on the web, and it’s the lynchpin of the company’s internet advertising program. But critics say that it’s also a reckless misuse of Verizon’s power as an internet service provider—something that could be used as a trump card to obviate established privacy tools such as private browsing sessions or ‘do not track’ features.
Ugh.
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