A SIM swap attack, also known as SIM card swapping or SIM card swapping fraud, is a type of cybercrime in which an attacker tricks or uses social engineering techniques to gain control of a target user's mobile phone number and the associated SIM card. Once the attacker successfully takes control of the target user's SIM card, they can intercept the target user's text messages, phone calls, and any authentication messages sent to the phone number. This enables them to carry out various malicious activities, including but not limited to: