Science How Hard is It to ‘De-anonymize’ Cellphone Sata? by Gary Kopycinski on March 28, 2013 Gary Kopycinski Author More in Science: Wilmington Man’s Photo of Rare Snowy Egret Wins Forest Preserve Photo Contest June 8, 2026 Cook County Announces Free 2026 Vets and Pets Rabies Vaccine and Microchip Clinics May 30, 2026 On Hantavirus, Park Forest Officials Urge Caution May 18, 2026 A new formula that characterizes the privacy afforded by large, aggregate data sets may be discouraging, but could help sharpen policy discussion.