Title: Captcha
Author: Simplywordpress
Published: <strong>April 27, 2011</strong>
Last modified: December 13, 2017

---

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![](https://s.w.org/plugins/geopattern-icon/captcha_92b6c9.svg)

# captcha

 * [Details](https://wordpress.org/plugins/captcha/#description)
 * [Reviews](https://wordpress.org/plugins/captcha/#reviews)
 * [Development](https://wordpress.org/plugins/captcha/#developers)

 [Support](https://wordpress.org/support/plugin/captcha/)

## Description

This plugin has been closed as of December 22, 2017 and is not available for download.
This closure is permanent. Reason: Security Issue.

## Reviews

![](https://secure.gravatar.com/avatar/c004b7314b17bb4eafd044a6ad409ffe00abe7fab636815902e2f283fce2b678?
s=60&d=retro&r=g)

### 󠀁[Works Great](https://wordpress.org/support/topic/works-great-5951/)󠁿

 [ilanaguttman](https://profiles.wordpress.org/ilanaguttman/) July 8, 2019

Works as promised, no bugs. I like the arithmetic option!

![](https://secure.gravatar.com/avatar/216e4aa47ce9fe14013bd58ef4adbf344effa015e9e6a22a28bac88a9d52e30a?
s=60&d=retro&r=g)

### 󠀁[great](https://wordpress.org/support/topic/great-9509/)󠁿

 [rhcanaly](https://profiles.wordpress.org/rhcanaly/) April 2, 2019

buenísimo

![](https://secure.gravatar.com/avatar/56dab6cc30df567f9d3b1763e528c839cc0d7f39edf6ffb48a4fbd6e92a85891?
s=60&d=retro&r=g)

### 󠀁[Great plugin, but it may have serious security issues](https://wordpress.org/support/topic/excellent-plugin-3577/)󠁿

 [ronaldreis3000](https://profiles.wordpress.org/ronaldreis3000/) May 21, 2018

Great plugin, but unfortunately it had a backdoor for an attacker accordingly to
the link https://www.wordfence.com/blog/2017/12/backdoor-captcha-plugin/. For this
reason, the plugin was marked as “This plugin has been closed for new installs”.
The cited site says that the backdoor is present in all versions bellow of 4.4.5
version. Anyway, the cited site recommends the uninstalling of this plugin.

![](https://secure.gravatar.com/avatar/bb97f2db5333277c2fd0cdab8e89474c0f9ee18a93fd01d3cb800d8661c17e13?
s=60&d=retro&r=g)

### 󠀁[Love it](https://wordpress.org/support/topic/love-it-2125/)󠁿

 [erik777](https://profiles.wordpress.org/erik777/) April 19, 2018

If you can do basic math, you can log in or register. Eliminated bot registration.

![](https://secure.gravatar.com/avatar/732377c82f457627f2727eb8a21c6e9eafb9356e10fce005155f2e88afc2b281?
s=60&d=retro&r=g)

### 󠀁[The best plugin](https://wordpress.org/support/topic/the-best-plugin-140/)󠁿

 [dirkmartens1965](https://profiles.wordpress.org/dirkmartens1965/) March 27, 2018

For me this is a great plugin to protect my site against hackers and intruders

![](https://secure.gravatar.com/avatar/df28daf53b780dcb1bae0174248351bab88a1e0669cec10871658b9801fc6585?
s=60&d=retro&r=g)

### 󠀁[good plugin](https://wordpress.org/support/topic/good-plugin-2685/)󠁿

 [Sobhan Askari](https://profiles.wordpress.org/sobhanaskari/) February 15, 2018

it`s a best plugin for captcha

 [ Read all 536 reviews ](https://wordpress.org/support/plugin/captcha/reviews/)

## Contributors & Developers

“Captcha” is open source software. The following people have contributed to this
plugin.

Contributors

 *   [ Simplywordpress ](https://profiles.wordpress.org/wpdevmgr2678/)

“Captcha” has been translated into 4 locales. Thank you to [the translators](https://translate.wordpress.org/projects/wp-plugins/captcha/contributors)
for their contributions.

[Translate “Captcha” into your language.](https://translate.wordpress.org/projects/wp-plugins/captcha)

### Interested in development?

[Browse the code](https://plugins.trac.wordpress.org/browser/captcha/), check out
the [SVN repository](https://plugins.svn.wordpress.org/captcha/), or subscribe to
the [development log](https://plugins.trac.wordpress.org/log/captcha/) by [RSS](https://plugins.trac.wordpress.org/log/captcha/?limit=100&mode=stop_on_copy&format=rss).

## Meta

 *  Version **4.4.5**
 *  Last updated **8 years ago**
 *  Active installations **N/A**
 *  WordPress version ** 3.9 or higher **
 *  Tested up to **4.9.29**
 *  Languages
 * [Czech](https://cs.wordpress.org/plugins/captcha/), [English (US)](https://wordpress.org/plugins/captcha/),
   [Romanian](https://ro.wordpress.org/plugins/captcha/), [Russian](https://ru.wordpress.org/plugins/captcha/),
   and [Ukrainian](https://uk.wordpress.org/plugins/captcha/).
 *  [Translate into your language](https://translate.wordpress.org/projects/wp-plugins/captcha)
 *  [Advanced View](https://wordpress.org/plugins/captcha/advanced/)