Julio Potier

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PLEASE CHECK YOUR EMAIL SETTINGS IN YOUR PROFILE BEFORE LOGOUT THE FIRST TIME AND WAIT FOR THE MAIL CONTAINING THE SECURE CARD. THANK YOU –
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A new field is added below the password one.
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<li>It requires a new code, this code is on a “MSL Secure Card” (png or html table).</li>
<li>This card contains 64 codes, each code contains 4 chars. You have to print it!</li>
<li>Now when someone wants to log on any account, even if he knows the password, he can not use it without the code.</li>
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This kind of authentication is called “Strong Authentication”, strong authentication is associated with at least two-factor authentication. 
Your usual password is the first and only factor, this plugin adds an external factor : a MSL Secure Card. 
Now, you have 2 secure factors to log in.
When someone wants to log in any account, he has to fill the username, password and now a “MSL Code” field. 
This code is printed on a card (you have to print it) and contains a code from A1 to H8. 
Without this code, he can not log in!
The codes are not stored in your DB, all codes are hashed like your password is. So, the codes are as secure as your password is.
Every blog which needs to improve its login’s security needs this plugin.

More Secure Login

This is a strong authentication plugin. You have to fill a second field, kind of password but this one comes from a printed card you own (FR/EN).

Sean Fisher

This plugin will hide WordPress Admin (/wp-admin/) when a user isn’t logged in. If a user isn’t logged in and they attempt to access WP Admin directly, they will be unable to and it will return a 404. It can also rename the login URL.
Also, you can add HTTP authentication directly from WP Admin and add custom username/password combinations for the HTTP auth or use the WordPress credentials.
This doesn’t touch any .htaccess files or change the WordPress core files. All the CSS/Images under /wp-admin/ are still accessible, just not the .php ones.
If you enable HTTP authentication, it will add HTTP authentication to the PHP files in /wp-admin/.
To contribute to the development, check out <a href="https://github.com/srtfisher/Lockdown-WPAdmin" rel="nofollow ugc">the GitHub Repository</a>.

Lockdown WP Admin

Lockdown WP Admin conceals the administration and login screen from intruders. It can hide WordPress Admin (/wp-admin/) and and login (/wp-login.

More Secure Login vs Lockdown WP Admin