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.

webvitaly

kudlav

This is fork of successful Anti-spam plugin v5.5 written by webvitalii, for more info visit <a href="https://github.com/kudlav/anti-spam/" rel="nofollow ugc">GitHub Fork</a>. 
From version 5.6 maintained by kudlav.
<ul>
<li><a href="https://github.com/kudlav/anti-spam/" rel="nofollow ugc">GitHub</a></li>
</ul>
Anti-spam Reloaded plugin blocks 100% of automatic spam messages in comments section and also blocks all trackbacks.No captcha required.
Plugin is simple and easy to use: just install it and it just works.
Blocked comments can be stored in the Spam area and converted to regular comments if needed.
Anti-spam Reloaded plugin is GDPR compliant and does not store any other user data except of the behaviour mentioned above.
Plugin blocks spam only in comments section.. 
Plugin does not block manual spam (submitted by spammers manually via browser).
<h3>Compatibility</h3>
All modern browsers and IE11+ are supported. 
Anti-spam Reloaded plugin works with disabled JavaScript. Users with disabled JavaScript should manually fill current year before submitting the comment.
Server compatibility:
<ul>
<li>WordPress 3.3 – 6.5</li>
<li>PHP 5.6 – 8.2</li>
<li>Doesn’t use jQuery</li>
</ul>
Plugin is incompatible with:
<ul>
<li>Disqus</li>
<li>Jetpack Comments</li>
<li>AJAX Comment Form</li>
<li>bbPress</li>
</ul>
If site has caching plugin enabled and cache is not cleared or if theme does not use ‘comment_form’ action 
and there is no plugin inputs in comments form – plugin tries to add hidden fields automatically using JavaScript.
<h3>How does it work?</h3>
The blocking algorithm is based on 2 methods: ‘invisible js-captcha’ and ‘invisible input trap’ (aka honeypot technique).
<h4>‘invisible js-captcha’</h4>
The ‘invisible js-captcha’ method is based on fact that bots does not have JavaScript on their user-agents. 
Extra hidden field is added to comments form. 
It is the question about the current year. 
If the user visits site, than this field is answered automatically with JavaScript, is hidden by JavaScript and CSS and invisible for the user. 
If the spammer will fill year-field incorrectly – the comment will be blocked because it is spam.
<h4>‘invisible input trap’</h4>
The ‘invisible input trap’ method is based on fact that almost all the bots will fill inputs with name ’email’ or ‘url’. 
Extra hidden field is added to comments form. 
This field is hidden for the user and user will not fill it. 
But this field is visible for the spammer. 
If the spammer will fill this trap-field with anything – the comment will be blocked because it is spam.

f(x) Login Notification vs Anti-spam Reloaded