EFF and ACLU urge Ninth Circuit to rule tower dump warrants unconstitutional

EFF◼ and the ACLU filed an amicus brief in the Ninth Circuit in United States v. Spurlock, where a district court held that tower dump warrants are categorically unconstitutional general warrants but declined to suppress evidence under the good faith doctrine. The tower dump in question returned location data on nearly 1,700 unique phones. The brief argues that the Supreme Court's ruling in Chatrie v. United States on geofence warrants strengthens this position. In the alternative, it asks for strict limits on scope, duration, notice, and deletion of irrelevant data. No CVEs or patches are involved.

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