Safety · Guide

SIM-swap awareness

If they can port your number, SMS codes become their codes.

When your phone number stops being a safe second factor.

SIM-swap attacks trick a mobile provider into moving your number so SMS codes and calls route to the attacker.

Prefer app-based or hardware second factors over SMS where a service allows it.

UK angle: set provider PINs/passwords and treat unexpected loss of signal as a possible security event.

Exchanges and email are high-value targets — lock them down before you need the lesson.

opsecuk2fa