Spam Prevention

Use http://api.yandex.ru/cleanweb for check spam.

The aim of this module is to provide a set of tools to the administrator
that analyze Drupal's watchdog log records, identify and analyze patterns and provide intelligent suggestions to the site administrator.

Drupal's watchdog records logs are one of the most important sources of highly useful insights for any Drupal site administrator / developer. Though Drupal has a decent log viewer for the same, most of the time, we often have to rely on the experiences, senses and large amounts of patience of an expert administrator to systemmatically parse/classify records, identify patterns and make insightful interpretations / judgements from that usually huge volume of watchdog log records.

This module aims to help both the novice and the expert in this regard.

Badbot is a spam-prevention tool for the user registration form. It works by requiring the client to have JavaScript support, throwing an error when JS support is not present. Spam bots cannot handle JS, so this goes a long way towards blocking them without displaying pesky (and unreliable) captchas.

There is a detailed explanation available of this module's specifics.

How to use:

1. Enable module
2. Navigate to yoursite.com/admin/config/system/badbot and enable the 'User Registration' checkbox
3. Ensure you have a secret value in the Salt field
4. Set up a contact form or another way for users to contact you if they have JavaScript disabled and get rejected during the registration.

Have full control over the default mails sent by Drupal 7 out of the box.

Description

This small module extends original Drupal 7 account settings page with the ability to globally turn ON/OFF all standard mails.
By default Drupal 7 provides no option to globally disable the following mails:

• Welcome (new user created by administrator)
• Welcome (awaiting approval)
• Welcome (no approval required)
• Password recovery

Use cases

This module may come in handy when:

• you don't want to send those emails for some reason
• or you are sending them through some other means
• or to get rid of the PHP Mail error message when you’re working on localhost
• or other development purposes

Simple anti-spam module to prevent automatic spam from anonymous users.

Module adds for certain forms two new elements — checkbox "I'm not a spammer" and hidden checkbox "I'm a spammer". If user not checked first checkbox or checked second checkbox, form not submitted and display warning message.

Similar module — Honeypot.

The Civil Rights CAPTCHA module uses the Civil Rights CAPTCHA free anti-spam CAPTCHA service. The Civil Rights CAPTCHA provides a fact about a human rights issue or event and requires the user to select a word that matches how they feel. The CAPTCHA is passed if the answer showing empathy is selected.