In a recent Guardian article, reporter Sanya Mansoor explain how the FBI has resumed purchasing Americans’ location data from commercial data brokers without obtaining warrants, raising fresh concerns about whether the practice circumvents the Fourth Amendment.
The disclosure came when FBI Director Kash Patel was pressed at a Senate hearing by Sen. Ron Wyden (D-Ore.), a longtime critic of warrantless surveillance. Patel declined to commit to halting the purchases, telling lawmakers the agency buys commercially available information consistent with existing law and that it has produced valuable intelligence. Wyden countered that bypassing the warrant process amounts to “an outrageous end run around the fourth amendment”, made more dangerous by AI tools that can sift through massive datasets.
The Guardian explains that most of this data originates from ordinary mobile apps, which collect precise movement information and pass it along to embedded third-party software. Lena Cohen, staff technologist at the Electronic Frontier Foundation, told the Guardian that granting an app location permission also exposes that data to other companies whose code is embedded inside the app. Data brokers then aggregate and resell this information, sometimes maintaining portals that let government agencies query which phones were in a given area at a given time.
Nathan Freed Wessler of the ACLU emphasized just how revealing this information can be:
“It’s incredibly revealing knowing where your phone goes over time. This level of detail shows your patterns of life.”
– Nathan Freed Wessler, ACLU Speech, Privacy, and Technology Project, in The Guardian
That detail can expose where people sleep, who they spend time with, and what gatherings they attend, whether a psychiatrist’s appointment or a political rally.
A related NPR report by Jude Joffe-Block notes that the FBI is not alone. ICE and the Department of Defense have signed similar contracts, and ICE recently sought industry feedback on commercial big data and ad tech tools for its investigations. Privacy advocates see the upcoming reauthorization of Section 702 of the Foreign Intelligence Surveillance Act, set to expire April 20, as Congress’s best chance to close the so-called “data broker loophole.”
Below are key highlights:
- The FBI buys bulk location data from commercial brokers without seeking court-approved warrants, a practice the agency had paused in 2023.
- Most location data starts with mobile apps; embedded third-party code passes movement information to brokers, who resell it to advertisers, police, and federal agencies.
- Real-time bidding in online advertising creates another pipeline; anyone posing as an ad buyer can tap into a vast stream of personal data.
- ICE and the Department of Defense have also contracted for tools that rely on broker-sourced phone location information.
- Sen. Ron Wyden has introduced legislation that would require warrants before federal agencies can purchase Americans’ location data from brokers.
Together, these reports show how everyday phone use feeds an industry that quietly turns personal movements into a marketable asset, one that government agencies can tap without meaningful legal oversight. As Wessler points out, individual users can adjust app permissions and disable advertising IDs, but real protection will likely require Congress to act. Whether the upcoming FISA debate produces meaningful reform remains to be seen.
Acknowledgement: This summary was generated using AI writing tools as part of my experimental learning process. For more information, please refer to the original articles listed below.