SIM-swap fraud can redirect calls and SMS to an attacker. Protect the operator account, email, recovery methods and financial services.
How the attack works
An attacker attempts to convince the operator that they are the legitimate subscriber and requests a replacement SIM or eSIM.
Why it is dangerous
SMS codes, calls and account recovery messages can be redirected.
Protect the operator account
Use account PINs, port-out protection and strong authentication where offered.
Reduce reliance on SMS
For important services, use authenticator apps, security keys or passkeys when available.
If service suddenly disappears
Contact the operator from another device and secure email, banking and social accounts.
Preserve evidence
Keep alerts, emails, call records and operator reference numbers.
Frequently asked questions
What is SIM swapping?
It is unauthorized transfer of a mobile number to another SIM or eSIM.
What is a warning sign?
Unexpected loss of service can be one warning.
How can I reduce risk?
Use an operator account PIN and stronger non-SMS authentication where available.
What if my number is hijacked?
Contact the operator and secure email and financial accounts immediately.
Does IMEI stop SIM swapping?
No. SIM-swap fraud targets the subscription and account.