SIM swapping attacks, also known as SIM intercept attacks, are a type of identity theft in which the attacker convinces a mobile phone operator to switch the victim's phone number to a new device in order to gain access to bank accounts, credit card numbers and other sensitive information. Sometimes this is achieved by using the victim's real information to obtain authentication.
Once this is complete, the attacker has access to all of the victim's text messages, phone calls and accounts that may be linked to the phone number. If not detected early on, the attacker could open new accounts to transfer funds in the victim's name or block the victim from all accounts.
A sign of SIM swapping is the interruption of a device's ability to send or receive text messages and calls, without having requested it.You can protect yourself by doing the following:
Avoid relying on SMS for primary communication, as the data within these messages is not encrypted.
Enable two-factor authentication (2FA) for social media, credit cards and bank accounts.
Do not provide your mobile phone number on social media accounts or profiles that do not require it.