Based on the search term "116m gsm data paper," you are likely referring to one of the most significant academic papers in the field of computational social science and "Big Data."
The leaked dataset is part of a larger trend of significant Turkish data exposures, which sometimes include overlapping records from various sources. : Roughly 116 million entries.
With 116 million records, protecting User Identity (IMSI/IMEI) is paramount. Encryption and anonymization are mandatory to comply with regulations like GDPR.
If you are researching privacy, mobility, or mobile data mining, the de Montjoye paper is the standard reference. You can read it here: Nature Scientific Reports Article 20756 .