Babel Street

Technical capabilities

Babel Street operates two flagship platforms with substantial surveillance impact. Locate X aggregates mobile-device location data from commercially obtainable feeds including mobile advertising-bid streams and SDK-based data sales, and presents it as a queryable database. Operators can draw geographic and temporal queries to retrieve the historical movement patterns of devices that have passed through a target area.

Babel X performs cross-language social-media monitoring with native-language coverage of more than 200 languages. The combination provides operators with the rare capability to correlate social-media identity to physical movement, without a warrant or judicial process, by sidestepping the constitutional protections that apply to direct compelled disclosure from carriers under Carpenter v. United States.

Documented use

• US Department of Homeland Security and components: ICE, CBP, Secret Service contracts disclosed through public procurement and Wall Street Journal investigations (2020, 2021).
• US Internal Revenue Service Criminal Investigation: 2020 contract cancelled in 2021 following Senate Finance Committee inquiry led by Senator Ron Wyden.
• US Marines and US Special Operations Command: contracts confirmed through Defense Department procurement disclosures.
• US state and local law enforcement: New York Police Department, Texas Department of Public Safety and others, per public records.
• Foreign customers: limited public disclosure but reported in defense-industry trade press.

Customer states and policy context

Babel Street operates entirely within the commercial-data acquisition framework that the US federal government has used as a workaround to constitutional warrant requirements. The Office of the Director of National Intelligence acknowledged in a January 2022 report (declassified June 2023) that US intelligence agencies routinely purchase commercially available location and other personal data.

Civil-liberties advocates have argued for years that this practice circumvents the protections established by Riley v. California (2014) and Carpenter v. United States (2018). The American Civil Liberties Union and Electronic Frontier Foundation have pursued litigation in multiple federal jurisdictions, with mixed outcomes.

Legal and sanctions status

• Not on the US Department of Commerce Entity List.
• Not designated by US OFAC.
• Subject to ongoing ACLU and EFF litigation challenging warrantless commercial-data acquisition.
• Subject to inquiry by US Senate Finance Committee (2021) regarding IRS Criminal Investigation contract.
• Subject to the proposed Fourth Amendment Is Not For Sale Act (HR 4639, S 1265), introduced in 2021 and reintroduced in subsequent Congresses.

Technical countermeasures

• Reset mobile advertising ID frequently: iOS App Tracking Transparency provides per-app opt-out. Android exposes reset under Settings, Privacy.
• Disable location services in apps that do not need it: most location-data marketplace inflow comes from “free” apps with permission to share location data.
• Limit “free” app installation: ad-funded apps are the primary upstream source of location-data feeds resold to Babel Street and competitors.
• iOS Lockdown Mode: limits some categories of tracking. Not specifically aimed at this data category but reduces metadata exposure.
• Faraday-bag transport in sensitive contexts: prevents real-time location collection during sensitive activity.
• Policy advocacy: the Fourth Amendment Is Not For Sale Act would directly restrict the commercial pipeline. Effective constituent advocacy can move it through Congress.

There’s no perfect setup. Anyone selling you perfect is selling fear. The goal is simple: make yourself a harder target than the person next to you.