Unlike normal text messages, a contains machine-readable data. An attacker sends a binary SMS to the victim’s phone number. The phone receives it but does not display it as a normal message; instead, it forwards the binary payload directly to the SIM card for processing.
SIMJacker is a vulnerability that resides not in the phone’s hardware or its operating system, but in the SIM card itself. Specifically, it exploits a technology known as the (SIMalliance Toolbox Browser). thmyl brnamj simjacker
Since this attack happens at the SIM card level, individual users have limited control, but you can take these steps: Contact your Provider: Unlike normal text messages