Title: Anti-Captcha (anti-spam botblocker)
Author: filiw
Published: <strong>22. August 2009</strong>
Last modified: 3. November 2014

---

Plugins suchen

Dieses Plugin wurde **nicht mit den 3 neuesten Hauptversionen von WordPress getestet**.
Es wird möglicherweise nicht mehr gepflegt oder unterstützt und kann bei der Verwendung
mit neueren WordPress-Versionen zu Kompatibilitätsproblemen führen.

![](https://ps.w.org/anti-captcha/assets/icon-256x256.png?rev=1018753)

# Anti-Captcha (anti-spam botblocker)

 Von [filiw](https://profiles.wordpress.org/filiw/)

[Herunterladen](https://downloads.wordpress.org/plugin/anti-captcha.20141103.zip)

 * [Details](https://de.wordpress.org/plugins/anti-captcha/#description)
 * [Rezensionen](https://de.wordpress.org/plugins/anti-captcha/#reviews)
 *  [Installation](https://de.wordpress.org/plugins/anti-captcha/#installation)
 * [Entwicklung](https://de.wordpress.org/plugins/anti-captcha/#developers)

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

## Beschreibung

Anti-Captcha is a transparent spam solution that does not require any end-user interaction.

It is based on a nonce key, which is dynamically inserted using randomly generated(
and obfuscated) javascript.

The aim of this plugin is to prevent automated attacks (by bots) on the following
WordPress actions:

 * Posting comments
 * Registering for a new account
 * Requesting a lost password

When a comment is posted without a valid Anti-Captcha token, it shall be _instantly
marked as spam_. This way, you can always manually approve this comment in hindsight
if it appeared to be sincere.

## Installation

To install simply:

 1. Upload the ‚anti-captcha‘ folder to the /wp-content/plugins/ directory
 2. Aktiviere das Plugin in WordPress über das Menü „Plugins“

## FAQ

  Installation Instructions

To install simply:

 1. Upload the ‚anti-captcha‘ folder to the /wp-content/plugins/ directory
 2. Aktiviere das Plugin in WordPress über das Menü „Plugins“

  Is javascript required by the user?

Yes, however this sounds worse then it is.
 Generally, it’s frowned upon if you 
don’t write javascript in an unobstructive way. The reason for this is that some
visitors don’t support javascript but should still be able to get around your website.

AFAIK there are four types of user-agents not supporting javascript:

 * Search-engine spider bots
 * Users of a command-line browser (like Lynx)
 * Users who actively disabled javascript in their browser
 * Mischievous bots trying to spam or hack into your blog

Obviously, search-engines don’t need to comment, register or login so they can be
ruled out.
 Lynx users and users with javascript disabled are likely to be a _very
small_ percentage of the internet population, who have actively excluded themselves
from certain webfeatures. Finally, badly behaving bots, is what the Anti-Captcha
plugin is trying to block.

## Rezensionen

![](https://secure.gravatar.com/avatar/0064aad4c0b4ff225b7c587d100c5e99efd601043f5946cf43b3f5862ea191f7?
s=60&d=retro&r=g)

### 󠀁[Every comment is marked as spam](https://wordpress.org/support/topic/every-comment-is-marked-as-spam/)󠁿

 [Anonymous User 5731870](https://profiles.wordpress.org/anonymized-5731870/) 12.
Februar 2018

This plugin does not work in recent WordPress versions. It filters out every comment
as spam, also those by humans, not bots.

![](https://secure.gravatar.com/avatar/074bb3b9db77d9bd693fea1f32d94fa960855ecc879545a3f40b4551759d29e3?
s=60&d=retro&r=g)

### 󠀁[Very good plugin](https://wordpress.org/support/topic/very-good-plugin-994/)󠁿

 [MAzZY](https://profiles.wordpress.org/mazzy/) 29. August 2017

Lite, fast, perfect

 [ Alle 5 Rezensionen lesen ](https://wordpress.org/support/plugin/anti-captcha/reviews/)

## Mitwirkende und Entwickler

„Anti-Captcha (anti-spam botblocker)“ ist Open-Source-Software. Folgende Menschen
haben an diesem Plugin mitgewirkt:

Mitwirkende

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

[Übersetze „Anti-Captcha (anti-spam botblocker)“ in deine Sprache.](https://translate.wordpress.org/projects/wp-plugins/anti-captcha)

### Interessiert an der Entwicklung?

[Durchstöbere den Code](https://plugins.trac.wordpress.org/browser/anti-captcha/),
sieh dir das [SVN-Repository](https://plugins.svn.wordpress.org/anti-captcha/) an
oder abonniere das [Entwicklungsprotokoll](https://plugins.trac.wordpress.org/log/anti-captcha/)
per [RSS](https://plugins.trac.wordpress.org/log/anti-captcha/?limit=100&mode=stop_on_copy&format=rss).

## Änderungsprotokoll

#### 20141103

 * Fixed a tagging mistake causing a „The plugin does not have a valid header“ error
   for new installations
 * Added a plugin icon

#### 20140908

 * Tested on WordPress version 4.0

#### 20140129

 * Fixed a bug that always marked legitimate comments to be moderated

#### 20140128

 * Fixed a bug that broke wordpress discussion settings
 * Improved code compatibility
 * PhantomJs headless browser detection
 * Tested on WordPress version 3.8.1

#### 20140102

 * Tested on WordPress version 3.8

#### 20130927

 * Fixed a bug in which the ‚An administrator must always approve the comment‘ settings
   was ignored

#### 20130504

 * Fixed a bug in which legitimate comments where always flagged for moderation
 * Added a check on the format of the supplied mailaddress and it’s MX-records (
   on fail, a comment will be held for moderation instead of being approved)

#### 20130429

 * Updated anti-captcha to version 0.3 which introduces a new DOMReady loading method
 * This version also prevents a ‚alreadyrunflag is not defined‘ javascript error

#### 20130421

 * Tested plugin on WordPress 3.5.1 install, everything works as expected
 * Linked to new blog article at http://blog.fili.nl/wordpress-anti-captcha-plugin/
 * Version bump to remove WordPress ‚Out of date‘ alert

#### 20110129

 * Fixed regression bug that prevented anti-captcha to work on registration and 
   lost-password form

#### 20110125

 * Tested on WordPress version 3.0.4
 * Removed anti-captcha from login procedure

#### 20100708

 * Tested on WordPress version 3.0

#### 20100426

 * Changed error message to be more descriptive
 * Changed cookie mechanism to not rely on PHP sessions
 * Added ‚Back/Forward Cache‘ prevention
 * Removed jQuery dependency
 * Tested on WordPress version 2.9.2

#### 20090821

 * First release

## Meta

 *  Version **20141103**
 *  Zuletzt aktualisiert **vor 9 Jahren**
 *  Aktive Installationen **1.000+**
 *  WordPress-Version ** 2.8.4 oder höher **
 *  Getestet bis **4.0.0**
 *  Sprache
 * [English (US)](https://wordpress.org/plugins/anti-captcha/)
 * Schlagwörter
 * [anti-captcha](https://de.wordpress.org/plugins/tags/anti-captcha/)[anti-spam](https://de.wordpress.org/plugins/tags/anti-spam/)
   [blocker](https://de.wordpress.org/plugins/tags/blocker/)[filter](https://de.wordpress.org/plugins/tags/filter/)
   [spam](https://de.wordpress.org/plugins/tags/spam/)
 *  [Erweiterte Ansicht](https://de.wordpress.org/plugins/anti-captcha/advanced/)

## Bewertungen

 4.2 von 5 Sternen.

 *  [  4 5-Sterne-Rezensionen     ](https://wordpress.org/support/plugin/anti-captcha/reviews/?filter=5)
 *  [  0 4-Sterne-Rezensionen     ](https://wordpress.org/support/plugin/anti-captcha/reviews/?filter=4)
 *  [  0 3-Sterne-Rezensionen     ](https://wordpress.org/support/plugin/anti-captcha/reviews/?filter=3)
 *  [  0 2-Sterne-Rezensionen     ](https://wordpress.org/support/plugin/anti-captcha/reviews/?filter=2)
 *  [  1 1-Sterne-Rezension     ](https://wordpress.org/support/plugin/anti-captcha/reviews/?filter=1)

[Deine Rezension](https://wordpress.org/support/plugin/anti-captcha/reviews/#new-post)

[Alle Rezensionen anzeigen](https://wordpress.org/support/plugin/anti-captcha/reviews/)

## Mitwirkende

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

## Support

Möchtest du etwas mitteilen? Brauchst du Unterstützung?

 [Support-Forum anzeigen](https://wordpress.org/support/plugin/anti-captcha/)

## Spenden

Möchtest du die Weiterentwicklung dieses Plugins unterstützen?

 [ Für dieses Plugin spenden ](http://blog.fili.nl/wordpress-anti-captcha-plugin/)