Exclusive: Evidence of cell phone surveillance detected at anti-ICE protest

Mobile network anomalies consistent with cell phone surveillance were detected at a July 4 protest at an Immigration and Customs Enforcement field office in Washington state. Those anomalies, according to an independent analysis by Straight Arrow News, suggest that a device known as an IMSI catcher may have been used to collect identifying information on cell phones at the protest site.

ICE did not respond to requests for comment from SAN. It is not clear whether ICE or any other law enforcement agency obtained a warrant to use an IMSI catcher — commonly referred to as a “Stingray” — to conduct surveillance...