Blue Captcha - ChoosePlugin.com

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

Author:	Jotis Kokkalis (BlueCoder) (profile at wordpress.org)
WordPress version required:	2.8.6
WordPress version tested:	4.2.2
Plugin version:	1.7.4
Added to WordPress repository:	19-03-2012
Last updated:	06-06-2015 Warning! This plugin has not been updated in over 2 years. It may no longer be maintained or supported and may have compatibility issues when used with more recent versions of WordPress.
Rating, %:	92
Rated by:	14
Plugin URI:	http://wordpress.org/extend/plugins/blue-capt...
Total downloads:	35 560
Active installs:	600+
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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.

Do you like Blue Captcha? Then Support it!

If you like Blue Captcha, then you can help it grow by donating one dollar. Any donation will be highly appreciated and will help in further development of this plugin.

Features:

It can be applied to any of the following : login form, registration form, commentary form or password recovery form
It's highly customized
It has 7 predefined CAPTCHA difficulty levels to choose from - of course, you can adjust your CAPTCHA settings and create a custom level
The possible CAPTCHA customizations are more than enough
It can apply the same or totally different CAPTCHA settings on login form, registration form, commentary form and password recovery form
It can display CAPTCHA to only non-registered users or registered users
It can preview CAPTCHA image before applying it
It supports 5 different fonts and 30 different background images
It supports single or double CAPTCHA layer
It can display up to 20(!) characters on Captcha Images
It is capable of adding extra drawing (lines, circles, grid, transparent lines) on CAPTCHA image
It is capable of keeping log file which registers all activities concerning user logins, user registrations, user comments and password recovery
It has "Hall of Shame" (HoS)
It provides blocking options as well
It can export the entire log file or HoS into CSV file (Excel)
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

You can visit Blue Captcha Page for more information.

Blue Captcha Translation

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.

Screenshots
FAQ
ChangeLog

1.7.4

06 Jun 2015
Operating System & Browser information (HTTP_USER_AGENT) added in Log File
WP-CONTENT hardcoded string was fixed
Translation to Serbo-Croatian Language (sr_RS) was added – Translation by Borisa Djuraskovic
Translation to Slovenian Language (sl_SI) was added – Translation by Leon Roskar

1.7.3

12 Sep 2014
New option “Caption” was added in General Options
Bug with broken image was fixed (major issue)
Translation to Brazilian Portuguese Language (pt_BR) was added – Translation by João Victor T. Magalhães

1.7.2

16 Mar 2014
New option “Enable Translation” was added in General Options
Translation to Russian Language (ru) was added – Translation by Alex Balashov
Translation to Italian Language (it) was added – Translation by Ericka Morales Hernández

1.7.1

5 Feb 2014
Translation to Spanish Language (es) was added – Translation by Andrew Kurtis

1.7

21 Dec 2013
New option “Captcha Position On Comment Form” was added in General Options (Beta)
New option “Refresh Type” was added in General Options (default text “Refresh” or icon can be used for refreshing captcha)
Opportunity of selecting a particular color & background for all captcha types
Template translation file (“blue-captcha.pot”) was created and located in “languages” folder
Translation to Greek Language (el) was added – Translation by Jotis
Bug with “cut” non-english characters in Log File was fixed
Minor UI improvements

1.6

16 Aug 2013
New options were added for “Make Empty Captcha Check Before Form Submission” in General Options
“Save Incorrect Passwords Only” option was added for “Save Passwords” in General Options
Issue with saving blocked IPs was fixed (for PHP versions prior to 5.2.9)
IPs are grouped in Hall Of Shame
“View Log” link was added for every IP address in Hall Of Shame

1.5

20 Jul 2013
Blue Captcha entry is now displayed above “Post Comment” button on commentary form
The attribute “required” was added in all Blue Captcha input fields
Several UI improvements

1.4

07 Jan 2013
“Make Empty Captcha Check Before Form Submission” option was added in General Options
“Keep Comment After Failed Captcha” option was added in General Options
“Ignore Case Sensitivity In Characters” option was added in Options

1.3

19 Oct 2012
“IP Informer URL” option was added in General Options
“Allow Pingbacks & Trackbacks” option was added in General Options
More details about Comments are provided in Log File
25 new background images were added (30 background images are now available in total)

1.2

06 Apr 2012
“LOST_PASSWORD” type was changed to “LOST PASSWORD” in Log File
Blue Captcha is now able to estimate Spam Probability
“# Given Chars” and “% Spam Probability” indicators were added in Log File
“Hall of Shame” (HoS) was introduced

1.1

26 Mar 2012
Database management was changed and all DB handling is now made through $wpdb
Image format returned by Blue Captcha is now “png” (changed from “gif”)
“Random” choice was added to “Background” options
Captcha Sessions Data can be stored either into Sessions or Database
Some bugs were fixed
Security was further improved
Extra protection key was added

1.0

19 Mar 2012
Initial version of Blue Captcha WP Plugin

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Plugin uses its own database tables:
blcap_banlog, ips, log, sessions