Google Fi adds new number blocking feature to protect against SIM swap attacks

Google Fi Wireless has introduced a new number lock feature that provides an additional layer of protection against unauthorised SIM swapping.

What is a SIM-swap attack?

A SIM swap occurs when someone can steal your phone number by convincing your carrier to move your phone number to a SIM card that belongs to them. For example, someone could call your operator, pretend to be you and convince them that you have lost your phone and need to transfer your number to a new phone.

Here's How It Works

When a number block is enabled, "you cannot port your number to a new device or carrier while this block is active".

How to enable it

• Go to the Google Fi website (fi.google.com/account) and select your user (if you have multiple users on a group plan).
• Go to Phone settings, Privacy & security, Number blocking.
• Tap Sign in to manage your number blocking and verify your Google account credentials to enable the switch.

What else can I do to protect myself from SIM-swap attacks?

• Enable two-factor authentication (2FA) for your Google account. This will add an extra layer of security, as fraudsters will need not only your password, but also a code that will be sent to your phone or email to log into your account.
• Be careful who you share your phone number with. Don't post it online or give it to strangers.
• Monitor your bank statements and mobile phone bills for unauthorised transactions.

Source: Google