Accounts & identity
SIM swapping
SIM Swapping
An attacker transfers a phone number to another SIM or eSIM to intercept calls and security codes.
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MIGHT YOU BE AFFECTED?
Turn knowledge into action.
How does this work?
SIM swapping relies on a technical weakness, stolen access or human manipulation. The exact mechanism depends on the target and the attacker’s objective.
REAL-WORLD EXAMPLE
« A victim or organisation encounters signs consistent with sim swapping and must verify the event before taking further action. »
Typical sequence
- 1Initial access or contact
- 2Exploitation, manipulation or persistence
- 3Impact on accounts, systems or data
Warning signs
- Sudden loss of service
- Unrequested SIM notification
- Unexpected account resets
How to protect yourself
- Keep systems and applications up to date
- Use strong access controls and phishing-resistant MFA
- Monitor unusual activity and preserve reliable backups
If you think you are affected
Stop the affected activity, isolate exposed devices or accounts, preserve evidence, revoke suspicious access and contact the appropriate security professional.
Last updated: 6 September 2026