John Z Black

The Invisible Spy in Your Pocket: Why Carrier Privacy Just Failed

John Z Black May 1, 2026

Privacy & Digital Rights #telecom #SS7 #Citizen-Lab #surveillance #location-tracking

Think your phone is secure because it's in your pocket? Citizen Lab caught 'Phantom Operators' tracking users globally through cell signaling gaps that no app can fix.

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CBP Was Tracking Your Phone With Ad Data -- And When Their Own Privacy Officers Said Stop, They Were Fired

John Z Black Mar 14, 2026

Privacy & Policy #cbp #dhs #privacy #surveillance #data-broker #foia #government-accountability #location-tracking

CBP bought commercial ad data to track Americans' phones without warrants. When internal privacy officers pushed back on related illegal conduct, they got canned.

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