# Format-Preserved Pseudonymised IMSI-Catcher Observations
## Dataset Description
This dataset contains pseudonymised mobile-network observation records derived from IMSI-catcher-style telemetry. It is intended for research on mobile-network measurements, cellular security, anomaly detection, roaming patterns, and privacy-preserving analysis of telecom metadata.
The dataset has been transformed using deterministic, keyed, format-preserving pseudonymisation. The output keeps the same field names and general value formats as the original observations, while replacing sensitive identifiers and serving-location values with consistent synthetic equivalents.
The timestamp field is preserved unchanged to support temporal analysis.
## Important Privacy Notice
This dataset is pseudonymised, not guaranteed anonymous.
Direct identifiers such as raw IMSI, TMSI, MCC, MNC, LAC, and cell identifiers have been transformed. However, mobility traces, timestamps, rare observation patterns, repeate…
