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

---

Ricerca i plugin

Questo plugin **non è stato testato con le ultime 3 versioni principali (major releases)
di WordPress**. Potrebbe non essere più mantenuto, o supportato, e potrebbe presentare
problemi di compatibilità se utilizzato con versioni più recenti di WordPress.

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

# Anti-Captcha (anti-spam botblocker)

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

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

 * [Dettagli](https://it.wordpress.org/plugins/anti-captcha/#description)
 * [Recensioni](https://it.wordpress.org/plugins/anti-captcha/#reviews)
 *  [Installazione](https://it.wordpress.org/plugins/anti-captcha/#installation)
 * [Sviluppo](https://it.wordpress.org/plugins/anti-captcha/#developers)

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

## Descrizione

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.

## Installazione

To install simply:

 1. Upload the ‘anti-captcha’ folder to the /wp-content/plugins/ directory
 2. Activate the plugin through the ‘Plugins’ menu in WordPress

## FAQ

  Installation Instructions

To install simply:

 1. Upload the ‘anti-captcha’ folder to the /wp-content/plugins/ directory
 2. Activate the plugin through the ‘Plugins’ menu in WordPress

  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.

## Recensioni

![](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
Febbraio 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 Agosto 2017

Lite, fast, perfect

 [ Leggi tutte le recensioni di 5 ](https://wordpress.org/support/plugin/anti-captcha/reviews/)

## Contributi e sviluppo

“Anti-Captcha (anti-spam botblocker)” è un software open source. Le persone che 
hanno contribuito allo sviluppo di questo plugin sono indicate di seguito.

Collaboratori

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

[Traduci “Anti-Captcha (anti-spam botblocker)” nella tua lingua.](https://translate.wordpress.org/projects/wp-plugins/anti-captcha)

### Ti interessa lo sviluppo?

[Esplora il codice](https://plugins.trac.wordpress.org/browser/anti-captcha/) segui
il [repository SVN](https://plugins.svn.wordpress.org/anti-captcha/), segui il [log delle modifiche](https://plugins.trac.wordpress.org/log/anti-captcha/)
tramite [RSS](https://plugins.trac.wordpress.org/log/anti-captcha/?limit=100&mode=stop_on_copy&format=rss).

## Changelog

#### 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

 *  Versione **20141103**
 *  Ultimo aggiornamento **8 anni fa**
 *  Installazioni attive **1.000+**
 *  Versione WordPress ** 2.8.4 o superiore **
 *  Testato fino alla versione **4.0.0**
 *  Lingua
 * [English (US)](https://wordpress.org/plugins/anti-captcha/)
 * Tag
 * [anti-captcha](https://it.wordpress.org/plugins/tags/anti-captcha/)[anti-spam](https://it.wordpress.org/plugins/tags/anti-spam/)
   [blocker](https://it.wordpress.org/plugins/tags/blocker/)[filter](https://it.wordpress.org/plugins/tags/filter/)
   [spam](https://it.wordpress.org/plugins/tags/spam/)
 *  [Visualizzazione avanzata](https://it.wordpress.org/plugins/anti-captcha/advanced/)

## Valutazioni

 4.2 su 5 stelle.

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

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

[Vedi tutte le recensioni](https://wordpress.org/support/plugin/anti-captcha/reviews/)

## Collaboratori

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

## Supporto

Hai qualcosa da dire? Ti serve aiuto?

 [Chiedi nel forum di supporto](https://wordpress.org/support/plugin/anti-captcha/)

## Donazioni

Vuoi sostenere le versioni future?

 [ Fai una donazione per lo sviluppo ](http://blog.fili.nl/wordpress-anti-captcha-plugin/)