US 12,149,942 B2
Systems and methods for network access security
Mark Shostak, Plano, TX (US); and Nandan Naik, Salem, MA (US)
Assigned to Verizon Patent and Licensing Inc., Basking Ridge, NJ (US)
Filed by Verizon Patent and Licensing Inc., Basking Ridge, NJ (US)
Filed on Aug. 10, 2022, as Appl. No. 17/818,754.
Application 17/818,754 is a continuation of application No. 17/146,712, filed on Jan. 12, 2021, granted, now 11,445,375.
Prior Publication US 2022/0386128 A1, Dec. 1, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. G06F 21/00 (2013.01); H04W 8/18 (2009.01); H04W 12/00 (2021.01); H04W 12/37 (2021.01); H04W 12/71 (2021.01); H04W 12/72 (2021.01); H04W 60/00 (2009.01)
CPC H04W 12/37 (2021.01) [H04W 8/183 (2013.01); H04W 12/009 (2019.01); H04W 12/71 (2021.01); H04W 12/72 (2021.01); H04W 60/00 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method, comprising:
receiving, from a user device, an attach request to attach to a network, wherein the attach request includes a first international mobile equipment identity (IMEI) and an international mobile subscriber identity (IMSI);
determining whether the IMSI included in the attach request is stored in a database;
determining whether a second IMEI associated with the IMSI is stored in the database, and if the second IMEI associated with the IMSI is stored in the database, determining whether the stored second IMEI matches the first IMEI included in the attach request;
identifying, when the IMSI included in the attach request is stored in the database, a state associated with the IMSI;
storing, in the database, the first IMEI included in the attach request with the IMSI in response to determining that the identified state associated with the IMSI corresponds to a first state; and
approving or denying the attach request based on whether the IMSI included in the attach request is stored in the database, the identified state associated with the IMSI, and whether the second IMEI associated with the IMSI is stored in the database and the stored second IMEI matches the first IMEI included in the attach request.