SIMkopiointi

SIMkopiointi, also known as SIM cloning or SIM duplication, refers to the process of copying the data from one Subscriber Identity Module (SIM) card to another. This data typically includes the International Mobile Subscriber Identity (IMSI) number, authentication keys, and other network-specific information that allows a mobile device to connect to a cellular network.

The primary purpose of SIMkopiointi is often to enable multiple devices to share the same mobile number and service plan. This can be useful for users who want to use a smartphone and a feature phone simultaneously, or for businesses that need to equip multiple employees with devices that use a single company number. In some cases, it might be used for device management or testing purposes.

However, SIMkopiointi also carries significant security and legal implications. Unauthorized SIMkopiointi can be used for fraudulent activities, such as making calls or accessing services billed to the original SIM card owner. Mobile network operators generally implement security measures to prevent unauthorized cloning, and the practice may be illegal in many jurisdictions depending on the intent and method used. Legitimate SIMkopiointi usually requires the explicit authorization and cooperation of the mobile network operator. The technology and methods for SIMkopiointi have evolved over time, with older SIM cards being more susceptible to cloning than modern ones with enhanced security features.