SIM Lock Mechanism Binding Device Identification for Unauthorized Access Prevention
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Solution Overview
Problem
Organizations face challenges in preventing the unauthorized use of SIM cards in non-authorized personal mobile devices, leading to loss of control over network access and data security, especially as SIM cards are stolen or removed from managed devices and installed in unmanaged devices.
Innovation Solution
A SIM lock mechanism that automatically reads and stores the electronic serial number of a wireless device upon initial insertion, preventing network access if the SIM card is inserted into an unauthorized device by matching the stored identification, thus ensuring the SIM card can only be used in the device it is paired with.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If MDM tools are used to control and protect data on mobile devices, then data security and network control are improved, but users can remove SIM cards from authorized devices and install them in unauthorized personal devices, causing loss of control
Solution Approach 1:
The system performs preliminary actions by binding the SIM card to the device identification (IMEI) before any unauthorized removal can occur. When a SIM card is first inserted into a device, the system stores the association between the SIM card identifier and the device's unique identification in a database. This preliminary binding ensures that before the SIM card can be used in another device, it is already restricted to its authorized device, preventing the security breach from happening in the first place.
Solution Approach 2:
The system implements continuous feedback by checking the device identification against the stored binding information every time the SIM card attempts to access network services. The network device receives the device identification from the host device, queries the database to verify if it matches the stored binding, and either permits or denies network access accordingly. This real-time feedback mechanism ensures that any attempt to use the SIM card in an unauthorized device is immediately detected and blocked.
2Ease of operation
If SIM cards are allowed to be moved between devices for user convenience, then ease of operation is improved, but organizational data security and network control are compromised
Solution Approach 1:
The system establishes the authorized device binding in advance when the SIM card is first inserted into a device. The network device stores the association between the SIM card identifier and the device identification in a database before any potential unauthorized transfer occurs. This preliminary action creates a security barrier that prevents the SIM card from being used in unauthorized devices while maintaining the appearance of normal operation.
Solution Approach 2:
The system continuously verifies device authorization by checking the device identification against the stored binding information during network access attempts. If the device identification does not match the stored binding, the system denies network access, providing immediate feedback that prevents unauthorized use. This feedback mechanism ensures that organizational data security is maintained while allowing legitimate use in authorized devices.
3Reliability
If MDM restrictions are enforced on mobile devices, then organizational policy compliance is improved, but employees can bypass control by moving SIM cards to personal devices not implementing MDM
Solution Approach 1:
The system binds the SIM card to the device identification (IMEI) in advance, creating a security restriction that is independent of MDM software presence. When the SIM card is first inserted into a device, the system stores the binding between the SIM card identifier and the device's unique identification. This preliminary binding ensures that even if employees move the SIM card to a personal device without MDM, the network access control will still prevent unauthorized use because the device identification will not match the stored binding.
Solution Approach 2:
The system implements continuous verification by checking the device identification against the stored binding information during network access attempts. The network device queries the database to verify if the current device is authorized for the SIM card, and only permits network access if the device identification matches the stored binding. This feedback mechanism bypasses the need for MDM software on the employee's device, as the security check occurs at the network level, ensuring policy compliance regardless of device type or MDM implementation.
Data Source
AI summary
The disclosure is directed to a device configured to implement a SIM lock to control network access associated with a wireless device. The device including a processor configured to interrogate a host wireless device and obtain a host wireless device identification from the host wireless device. The processor further configured to retrieve from a memory a stored wireless device identification, determine if a host wireless device identification matches the stored wireless device identification, prevent access of the host wireless device to network wireless services if the host wireless device identification does not match the stored wireless device identification, and enable access of the host wireless device to network wireless services if the host wireless device identification matches the stored wireless device identification. An associated process is also disclosed.