WHO CAN TRACK YOU WHEN YOU USE YOUR CELL PHONE?

DATA RETENTION PERIOD FOR MAJOR CELL PHONE CARRIERS - INCLUDED TEST MESSAGES, IP ADDRESSES

Original:  Friday, September 30, 2011, 6:59:52 AM
Learn More:  ACLU: Justice Department Document Details Cell-Phone Data Kept by Service Providers By Josh Smith
Updated: September 29, 2011 | 6:26 p.m. September 29, 2011 | 6:20 p.m.
Reprinted with permission

Many major cellular-service providers track and retain customers' cell-phone information for years, according to a Justice Department document released by the American Civil Liberties Union.  

All the major companies keep information on the exact cell towers used by a phone for as long as two years, potentially allowing them to track a person’s general movement, the ACLU says.

The ACLU, which got the document through a Freedom of Information Act request, said it was compiled to advise law enforcement about what records are available. A few takeaways from the document, available on the ACLU website:

• Verizon keeps subscriber information for three to five years; it holds on to call records, text-message details, and cell-tower information for one rolling year. The provider keeps text-message content for three to five days.

• ATT retains call records for five to seven years as well as cell-tower information (since July 2008) and text-message details. It doesn’t retain any text-message content. Sprint holds on to subscriber information for an unlimited amount of time. It preserves call records and cell-tower information for 18 to 24 months. It does not retain text-message content.
• T-Mobile keeps subscriber information for five years. Call records and cell-tower information are kept for 18 to 24 months.
• The document also detailed information kept by Nextel and Virgin Mobile.

The ACLU has been pressing law-enforcement officials to explain to what extent they are using cell-phone data to track Americans.

“All too often, the government is taking advantage of outdated privacy laws to get its hands on this valuable private information by demanding it without a warrant,” the ACLU said in a statement.

“The public has a right to know how and under what circumstances their location information is being accessed by the government – and that is exactly what we hope our information requests will uncover.”

For more on this subject, also see the Sept., 2011, ABC News report: Cellphone Carriers Retain Customer Data for Up to 7 Years.