Two Step Authentication

Two-step verification is available for sign-in using email and password.
By setting this up, you can take security measures against brute force attacks and password leaks.

How to set it up

From the developer console, select "Accounts" and you will see an item called "2-step verification".
Check the box and update it, and after the next time you sign in, an email will be sent to your registered address after you enter the correct password.
You can sign in by typing in the text in the email.