US 12,149,941 B2
Cross-carrier digital ledger for subscriber identification module (SIM) related data
Paul Samuel Farag, Bellevue, WA (US); and Christopher John Spanton, Seattle, WA (US)
Assigned to T-Mobile USA, Inc., Bellevue, WA (US)
Filed by T-Mobile USA, Inc., Bellevue, WA (US)
Filed on May 9, 2022, as Appl. No. 17/740,083.
Prior Publication US 2023/0362655 A1, Nov. 9, 2023
Int. Cl. H04W 12/126 (2021.01); H04L 9/40 (2022.01); H04W 12/122 (2021.01); H04W 12/128 (2021.01)
CPC H04W 12/126 (2021.01) [H04L 63/1416 (2013.01); H04W 12/122 (2021.01); H04W 12/128 (2021.01)] 20 Claims
OG exemplary drawing
 
1. A computer-readable storage medium, excluding transitory signals and carrying instructions, which, when executed by at least one data processor of a system, cause the system to:
detect a change related to an association between a subscriber identity module (SIM) and a telephone number of a wireless device,
wherein the SIM is configured for a telecommunications network, and
wherein the change includes a different SIM, a different telephone number, or a different telecommunications network that supports the wireless device;
generate a data record indicative of the change related to the association between the SIM and the telephone number of the wireless device;
cause storage of the data record on a distributed ledger residing on a cryptographically secured and distributed peer-to-peer network,
wherein the distributed ledger stores multiple data records that are published and accessible to multiple entities including a wireless network carrier of the telecommunications network, and
wherein the multiple data records are each associated with a respective timestamp for a respective wireless device; and
determine whether a particular wireless device is associated with potential malicious activity based on an age of a particular data record stored on the cryptographically secured and distributed peer-to-peer network,
wherein the age is determined relative to a particular timestamp associated with the particular data record.