So ...

This time I am going to use a handy plugin called WP Security Questions.

Here it is:

https://wordpress.org/plugins/wp-security-questions/

It's not a very small plugin (1 MB), so let's see the usual speed tests ...

Here are my results before installing the plugin ...

... and the result after installing and activating the plugin:

As you can see, it's not a tiny plugin, but is definitely a well-coded one, because is almost invisible ...

So, let's see how it works ...