turtlepod

f(x) Login Notification plugin is a security utility plugin to let you know who log to your site with other useful information such as user information and IP address via configurable email message.
After you install and activate this plugin, you can configure via Login Notification settings page in “Settings > Login Notification”.
Features:
<ol>
<li>Be the first to know when someone login to your site (or hack your site).</li>
<li>Enable/disable admin notification.</li>
<li>Exclude user roles for admin notification.</li>
<li>Configurable email template.</li>
<li>Extendable and fully documented (read the Dev Notes).</li>
<li>The GPL v2.0 or later license. 🙂 Use it to make something cool.</li>
<li>Support available at <a href="https://genbu.me/contact-us/" rel="nofollow ugc">Genbu Media</a>.</li>
</ol>
<h3>Dev Notes</h3>
Notes for developer:
<h4>Github</h4>
Development of this plugin is hosted at <a href="https://github.com/turtlepod/fx-login-notification" rel="nofollow ugc">GitHub</a>. Pull request and bug reports are welcome.
<h4>Options</h4>
This plugin save the options in single option name: <code>fx-login-nf-admin</code>.
<h4>Hooks</h4>
List of hooks available in this plugin:
filter: <code>fx_login_nf_user_roles</code> (array)
List of user roles in the checkbox option.
filter: <code>fx_login_nf_email_subject_template_default</code> (string)
The default email subject template. This string is translateable. To translate it in your language, translate the plugin and do not use this filter.
filter: <code>fx_login_nf_email_content_template_default</code> (string)
The default email content template. This string is translateable. To translate it in your language, translate the plugin and do not use this filter.
filter: <code>fx_login_nf_email_template_note</code> (string)
The template tags note in the settings page. Use this if you want to remove and add your own template tags in the email. This string is translateable. To translate it in your language, translate the plugin and do not use this filter.
filter: <code>fx_login_nf_parse_template</code> (string)
If you create your own tag, you can pass it in this filter.
filter: <code>fx_login_nf_from_email</code> (string)
“From Email Address” used to send the notification. As default it will use “noreply@{your site domain}”.
filter: <code>fx_login_nf_from_name</code> (string)
“From Email Address Name” used to send the notification. As default it will use “{your site name} Notification”. This string is translateable.
action: <code>fx_login_nf_before_send_mail</code>
Hook before email notification is sent.
action: <code>fx_login_nf_after_send_mail</code>
Hook after email notification is sent.

f(x) Login Notification

Send notification via email when a user successfully logged-in in your site.

Automattic

Donncha O Caoimh (a11n)

This plugin adds a stylesheet or image to your blog’s html source code. When a browser loads that stylesheet or image a cookie is dropped. If that user then leaves a comment the cookie is checked. If it doesn’t exist the comment is marked as spam. 
The plugin can also check how long it took a user to enter a comment. If it’s too fast it’s probably a spam bot. How fast can a legitimate user enter their name, email, web address and enter a well thought out comment?
For the adventurous, add these lines to your .htaccess and it will block spam attempts before they ever get to WordPress. Replace the Xs with the cookie that was set in your browser after viewing your blog. You can also find the cookie value by examining the page source code and looking for “css.php?k=XXXXXXXXXXXXXXXXXXX”. Make sure the lines go above the standard WordPress rules.
<pre><code> RewriteCond %{HTTP_COOKIE} !^.*XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX.*$
 RewriteRule ^wp-comments-post.php - [F,L]
</code></pre>
If you use WordPress MU, replace wp-comments-post.php above with wp-signup.php to block spam signups.
<pre><code> RewriteCond %{HTTP_COOKIE} !^.*XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX.*$
 RewriteRule ^wp-signup.php - [F,L]
</code></pre>

Cookies for Comments

If you don't use any other spam filter plugins, then you can rely on this to stop spam comments for sure!

Must have, if you don't use any other spam filters!

I'd been getting a dozen spams a day on two of my sites. We installed "Stop Spam Comments" on one and "Cookies for Comments" on the other. Both worked perfectly. No more spam. Thanks!



very easy and no more spam!

Sets a cookie on a random URL that is then checked when a comment is posted. If the cookie is missing the comment is marked as spam.

f(x) Login Notification vs Cookies for Comments