SIM Swapping Attacks: Protecting Your Phone Number

How attackers hijack phone numbers and how to prevent it.

1 min readSecurityاقرأ بالعربية

SIM swapping bypasses SMS-based 2FA.

Attack Process

1. Gather victim information
2. Social engineer carrier
3. Port number to new SIM
4. Intercept SMS codes
5. Access accounts

High-Profile Victims

- Jack Dorsey (Twitter CEO)
- Cryptocurrency holders
- Influencers and celebrities

Protection

- Set carrier PIN/password
- Use authenticator apps instead of SMS
- Enable carrier account alerts
- Consider number lock services
- Use hardware security keys
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