Identity Security
Protect Your Phone Number from SIM Swap Attacks
A focused guide to harden carrier accounts and reduce SIM-swap takeover risk for personal and business users.
Lock down your carrier account
SIM swaps often start with weak carrier identity verification.
Set account PINs and port-out protections with your carrier.
Action checklist
- Enable carrier account PIN/passcode.
- Request port freeze or transfer lock.
- Remove weak security questions.
Reduce dependence on SMS MFA
SMS-based codes are vulnerable when phone numbers are hijacked.
Move high-value accounts to authenticator apps or hardware keys.
Action checklist
- Prioritize email, banking, and cloud accounts.
- Replace SMS MFA where alternatives exist.
- Store backup codes offline.
Monitor early warning signals
Loss of signal, failed calls, or unexpected carrier notices may indicate takeover.
Treat sudden network loss with no outage reports as suspicious.
Action checklist
- Verify service outage status quickly.
- Review account login alerts immediately.
- Set account alerts for profile and recovery changes.
Execute rapid recovery if compromised
Containment speed matters when number control is lost.
Recover carrier access first, then rotate critical account credentials.
Action checklist
- Call carrier fraud team from alternate number.
- Reset passwords on critical accounts.
- Revoke suspicious sessions and tokens.