SIM swap attack
A SIM swap attack (also known as port-out scam, SIM splitting, simjacking, and SIM swapping) is a type of account takeover fraud that generally targets a weakness in two-factor authentication and two-step verification in which the second factor or step is a text message (SMS) or call placed to a mobile telephone. == Method == The fraud exploits a mobile phone service provider's ability to seamlessly port a phone number to a device containing a different subscriber identity module (SIM).