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Do towers record past telemetry data? Assuming they do, the granularity of knowing that a particular tower handled a phone ping is comparatively useless. A gu
by carboncopy 10y ago
Do towers record past telemetry data? Assuming they do, the granularity of knowing that a particular tower handled a phone ping is comparatively useless. A guessed location (stored on the iPhone) based off of cell tower triangulation and the occasional GPS calculation is far more valuable.
I do agree that we should consider the FBI's statement with skepticism.
- pdkl95 10y ago> Do towers record past telemetry data? Yes. Did everyone forget about COTRAVELER? http://apps.washingtonpost.com/g/page/national/how-the-nsa-is-tracking-people-right-now/634/ http://apps.washingtonpost.com/g/page/national/how-the-nsa-i... > the granularity of knowing that a particular tower handled a phone ping is comparatively useless. No, it's not. A simple correlation with other phones tells you who is traveling together (co-travelers). This only requires knowing which phones are near each tower, at a fairly low temporal granularity. I'm sure there are additional ways to analyze that data, too. The travel and relationship map that COTRAVELER discovers is merely the project we know about.