US military disables advertising identifiers on devices after location-data concerns

4 September 2026; updated 5 September (72-hour extension)

Service branches told lawmakers and a report that advertising identifiers had been disabled on several classes of military devices. The change followed reports that commercial location data may have exposed personnel.

Why it matters: It demonstrates how ordinary ad-tech telemetry can become a national-security attack surface.

Impact: Defence and critical-infrastructure organisations should inventory mobile identifiers, broker exposure and residual tracking paths beyond advertising IDs.

Independently corroborated with letters and service statements; reported targeting use was not fully independently verified. Medium