• Researchers intercepted T-Mobile call and text data using an $800 off-the-shelf satellite setup. • Around half of the satellite links they scanned were unencrypted, including military data. • T-Mobile fixed the issue after being alerted in December 2024, and told us that only a limited number of cell sites in remote, low-population areas were affected.

Update: October 14, 2025 (2:00 PM ET): Following publication of the original article below, T-Mobile contacted us to provide the following statement:

“T-Mobile immediately addressed a vendor’s technical misconfiguration that affected a limited number of cell sites using geosynchronous satellite backhaul in remote, low-population areas, as identified in this research from 2024. This was not network-wide, is unrelated to our T-Satellit

See Full Page