Between 2 AM and 4 AM, 116 million points collapse to a sparse set of residential cells. But within that sparse set, a new signal emerges: visiting patterns . Devices that spend nights in different cells on weekdays vs. weekends reveal second homes, hotel stays, or hospitalizations. The quiet hours are the most revealing.

Assume you are a network analyst handed a raw PCAP (packet capture) file or a CSV export containing 116 million rows. Follow this workflow:

(2.2TB of data) from MC2 Data, which included phone numbers, legal records, and employment history of millions of individuals. Security Implications