Cell Phones & Smartphones

Photo of cell phone tower disguised as a palm tree.

ACLU-Obtained Documents Reveal Breadth of Secretive Stingray Use in Florida

By Nathan Freed Wessler, Staff Attorney, ACLU Speech, Privacy & Technology Project at 5:30pm
The ACLU is releasing records today obtained from law enforcement agencies across Florida about their acquisition and use of sophisticated cell phone location tracking devices known as “Stingrays.” These records provide the most detailed account to date of how law enforcement agencies across a single state are relying on the technology. (The full records are available here.)
How Long Is Your Cell Phone Company Hanging On To Your Data?

How Long Is Your Cell Phone Company Hanging On To Your Data?

By Allie Bohm, Advocacy & Policy Strategist, ACLU at 10:17am

A Justice Department chart released to the ACLU through a public records act request reveals the location data retention policies of the major mobile carriers. What's your carrier's policy?

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ACLU Fights for Limits on Secret Phone Tracking

By Samia Hossain, William J. Brennan Fellow, ACLU Speech, Privacy, & Technology Project at 11:08am

In March of this year, Robert Harrison had a cell phone with him while he was inside his home. Though he has kept and used a cell phone as long as any of us, this time, things were different.

Unbeknownst to Harrison, Baltimore police officers…

stingray device

Internal Police Emails Show Efforts to Hide Use of Cell Phone Tracking

By Maria Kayanan, Associate Legal Director, ACLU of Florida at 9:01pm

As we suspected, local law enforcement officials are borrowing cell phone tracking devices known as “stingrays” from the U.S. Marshals Service—and police are deliberately concealing the use of stingrays in court documents submitted to judges…

Keeping the Government Out of Your Smartphone

Keeping the Government Out of Your Smartphone

By Chris Soghoian, Principal Technologist and Senior Policy Analyst, ACLU Speech, Privacy, and Technology Project at 11:48am

Smartphones can be a cop's best friend. They are packed with private information like emails, text messages, photos, and calling history. Unsurprisingly, law enforcement agencies now routinely seize and search phones. This occurs at traffic stops,…

Cell phone tower

Cell Phone Records Can Show Where You Sleep and Where You Pray

By Nathan Freed Wessler, Staff Attorney, ACLU Speech, Privacy & Technology Project at 10:29am

The Sixth Circuit Court of Appeals has become the latest federal appeals court to consider the question of whether law enforcement needs a warrant before it obtains cell phone location data. We have (with allies) filed an amicus brief in this case,…

Modification of image by jpstanley with map by jepoirrier via Flickr

Cell Tower Dumps: Another Surveillance Technique, Another Set of Unanswered Questions

By Katie Haas, Speech, Privacy, and Technology Project at 11:58am

Today, the ACLU filed a Freedom of Information Act request with the FBI, the DEA, the Secret Service, and several other agencies asking for information about a surveillance technique known as a “cell tower dump.” If you’re wondering what that…

Photo of stingray at bottom of ocean

VICTORY: Judge Releases Information about Police Use of Stingray Cell Phone Trackers

By Nathan Freed Wessler, Staff Attorney, ACLU Speech, Privacy & Technology Project at 3:12pm

A Florida judge has sided with the ACLU to order release of information about police use of “stingrays,” which are invasive surveillance devices that send out powerful signals to trick cell phones into transmitting their locations and identifying…

New Document Sheds Light on Government’s Ability to Search iPhones

New Document Sheds Light on Government’s Ability to Search iPhones

By Chris Soghoian, Principal Technologist and Senior Policy Analyst, ACLU Speech, Privacy, and Technology Project & Naomi Gilens, ACLU Speech, Privacy and Technology Project at 10:11am

Cell phone searches are a common law enforcement tool, but up until now, the public has largely been in the dark regarding how much sensitive information the government can get with this invasive surveillance technique. A document submitted to court…

filing cabinet

U.S. Marshals Seize Local Cops’ Cell Phone Tracking Files in Extraordinary Attempt to Keep Information From Public

By Nathan Freed Wessler, Staff Attorney, ACLU Speech, Privacy & Technology Project at 12:13pm

A run-of-the-mill public records request about cell phone surveillance submitted to a local police department in Florida has unearthed blatant violations of open government laws, including an incredible seizure of state records by the U.S. Marshals…

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