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To: scion who wrote (87378)1/20/2015 10:02:25 AM
From: scion  Read Replies (1) of 110652
 
Zombie Cookie: The Tracking Cookie That You Can’t Kill

An online ad company called Turn is using tracking cookies that come back to life after Verizon users have deleted them. Turn’s services are used by everyone from Google to Facebook.

by Julia Angwin and Mike Tigas
ProPublica, Jan. 14, 2015, 3:08 p.m.
propublica.org

Update, Jan. 16, 2014: In response to our revelation, Turn said it will suspend using its zombie cookie.

An online advertising clearinghouse relied on by Google, Yahoo and Facebook is using controversial cookies that come back from the dead to track the web surfing of Verizon customers.

The company, called Turn, is taking advantage of a hidden undeletable number that Verizon uses to monitor customers' habits on their smartphones and tablets. Turn uses the Verizon number to respawn tracking cookies that users have deleted.

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propublica.org
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