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The nation’s major mobile-phone providers are keeping a treasure trove of sensitive data on their customers, according to newly-released Justice Department internal memo that for the first time reveals the data retention policies of America’s largest telecoms.

The single-page Department of Justice document, “Retention Periods of Major Cellular Service Providers,” is a guide for law enforcement agencies looking to get information — like customer IP addresses, call logs, text messages and web surfing habits – out of U.S. telecom companies, including AT&T, Sprint, T-Mobile and Verizon.

To download the document, click here:  http://www.wired.com/images_blogs/threatlevel/2011/09/retentionpolicy.pdf

To read the article, click here: http://www.wired.com/threatlevel/2011/09/cellular-customer-data/