SIM Card Change Detection for Secure Cloud Account Migration

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

When a user changes their SIM card, existing cloud storage service accounts associated with the old SIM card can be accessed by others, leading to data leakage and insecurity.

Innovation Solution

A data backup method that detects SIM card changes, registers a new account associated with the new SIM card, backs up data from the old account to the new account, and deletes the old account data from the server to prevent unauthorized access.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the cloud storage service account is bound to the old SIM card for easy access, then the ease of operation is improved, but the security of user data deteriorates when the SIM card is changed

Engineering Contradiction:

Improveease of access to cloud storage accountVSAvoidsecurity of user data

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The system performs preliminary detection of SIM card changes and automatically triggers account migration and data backup processes before unauthorized access can occur. When a SIM card change is detected, the system proactively creates a new account, backs up data, and deletes old account data, preventing security breaches rather than responding after they occur.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system introduces an intermediary detection and management mechanism that monitors SIM card status and mediates between the old and new accounts. This intermediary layer detects SIM card changes and orchestrates the transition process, ensuring secure data migration while maintaining operational continuity without direct user intervention.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If the data is deleted from the old account after SIM card change, then the security against data leakage is improved, but the risk of data loss deteriorates if the backup process fails

Engineering Contradiction:

Improvesecurity against data leakageVSAvoidrisk of data loss

Core Design Contradiction:

ReliabilityVSLoss of information

Solution Approach 1:

The system implements beforehand cushioning by creating a backup copy of data in the new account before deleting data from the old account. This preparatory backup acts as a safety cushion, ensuring that even if the deletion process encounters errors or if the backup fails, the original data remains protected in the old account until the migration is fully verified.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

Solution Approach 2:

The system employs feedback mechanisms to monitor the data migration and backup process. After backing up data to the new account, the system verifies the success of the backup operation before proceeding with deletion from the old account. This feedback loop ensures that data is successfully transferred and validated before the old data is removed, preventing irreversible data loss.

Inventive Principle:

Principle #23Feedback

Data Source

PatentUS10542422B2Data backup method, storage medium and electronic device

Publication Date: 2020.01.21 GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP LTD

AI summary

A data backup method according to the present invention includes steps of: when a first account is logged in, obtaining information of a SIM card; registering a second account when determining that the SIM card of a terminal is changed from a first SIM card to a second SIM card; executing a predetermined data backup process so as to back up data corresponding to the first account to the second account; and sending a deletion instruction to a server for instructing the server to delete the data corresponding to the first account.