jotis

Blue Captcha is a powerful and highly customized WordPress plugin that effectively protects your WP blogs from spammers and unwanted persons. It is easily installed and provides high protection against spammers, bots or unwanted persons.
<h4>Do you like Blue Captcha? Then Support it!</h4>
If you like Blue Captcha, then you can help it grow by <a href="http://mybluestuff.blogspot.gr/p/donate_21.html" rel="nofollow ugc">donating one dollar</a>. Any donation will be highly appreciated and will help in further development of this plugin.
Features:
<ul>
<li>It can be applied to any of the following : login form, registration form, commentary form or password recovery form</li>
<li>It’s highly customized</li>
<li>It has 7 predefined CAPTCHA difficulty levels to choose from – of course, you can adjust your CAPTCHA settings and create a custom level</li>
<li>The possible CAPTCHA customizations are more than enough</li>
<li>It can apply the same or totally different CAPTCHA settings on login form, registration form, commentary form and password recovery form</li>
<li>It can display CAPTCHA to only non-registered users or registered users</li>
<li>It can preview CAPTCHA image before applying it</li>
<li>It supports 5 different fonts and 30 different background images</li>
<li>It supports single or double CAPTCHA layer</li>
<li>It can display up to 20(!) characters on Captcha Images</li>
<li>It is capable of adding extra drawing (lines, circles, grid, transparent lines) on CAPTCHA image</li>
<li>It is capable of keeping log file which registers all activities concerning user logins, user registrations, user comments and password recovery</li>
<li>It has “Hall of Shame” (HoS)</li>
<li>It provides blocking options as well</li>
<li>It can export the entire log file or HoS into CSV file (Excel)</li>
<li>With the help of log file and HoS, it’s easy to track down the IP address of spammers or unwanted persons and ban them for ever</li>
</ul>
You can visit <a href="http://mybluestuff.blogspot.com/p/blue-captcha.html" rel="nofollow ugc">Blue Captcha Page</a> for more information.
<h4>Blue Captcha Translation</h4>
Blue Captcha is now available in Greek, Spanish, Russian, Italian, Brazilian-Portuguese, Serbo-Croatian & Slovenian.
I would be very grateful if someone is willing to translate Blue Captcha to another language. 
For those interested, the template translation file (“blue-captcha.pot”) is located on “languages” folder of blue-captcha plugin.
<h3>Contribution</h3>
Special Thanks To The Following Contributors:
Leon Roskar (http://www.qb.si) => Slovenian Translation 
Borisa Djuraskovic (http://www.webhostinghub.com) => Serbo-Croatian Translation 
João Victor T. Magalhães => Brazilian Portuguese Translation 
Ericka Morales Hernández (http://todoriesgo.net) => Italian Translation 
Alex Balashov => Russian Translation 
Andrew Kurtis (http://www.webhostinghub.com) => Spanish Translation 
Christos Bakopoulos => Arabic Translation

Blue Captcha

Blue Captcha is a powerful and highly customized WordPress plugin that effectively protects your WP blogs from spammers and unwanted persons.

ABCdatos

To update your WordPress is a time consuming task you can’t avoid. Without it, your site will be in trouble and you’ll be regretful. Knowing this, here you have a powerful tool to help you to maintain your plugins updated.
Select the cases for automated updates and the manual ones based on the update level and single plugin if you want or let the plugin decide for you. Stability vs. safety is the balance. Let the plugin take itself the decision if you like it.
<a href="https://semver.org/" rel="nofollow ugc">Semantic version numbering</a> didides version numbers in three main blocks: major, minor and patch in this way: major.minor.patch. If all the plugin authors were working fine, when only patch version number changes, bug and security fixes in a compatible way were done, when the minor number increases, new functionality are added in a backwards compatible way. Major version changes are incompatible and may require additional work with your site.
You’ll never know in advance when an error in a plugin can make your WordPress site fail, nor will you know in advance that you are leaving a security hole to be attacked if you do not update.
The plugin allways allow to update itself to avoid locks as happened in version 1.1.9 requiring a manual update.

Automatic Safe Update

To update your plugins with safe and automated mode. Upgrade installed themes too.

Blue Captcha vs Automatic Safe Update