To stop automated attacks, Safe Signup Form leverages Elliot Back's WP Hashcash -- an elegant anti-spam engine that uses javascript to determine if the form is submitted by a robot or a web browser.
An administration page provides three options for handling submissions identified as spam:
- Delete spam submissions.
- Flag spam submissions (and forward them anyway).
- Forward without flagging.
The basic plugin offers a simple name and email form, but the php can be easily modified to incorporate any number of fields.
Safe Signup Form uses XHTML compliant code and has been tested in WordPress 2.7 through 3.3.1, MSIE 7, 8, and 9, Chrome, Firefox, and Safari.
WPMU Block Spam By Math
This plugin protects your WPMU signup process against spambots with a simple math question. This plugin is based on the Block-Spam-By-Math plugin created by Alexander Grau. This only protects the new blog creation process and the new user creation process. If you wish to have individual blog protect.........
WP-SpamFree Anti-Spam
An extremely powerful WordPress anti-spam plugin that eliminates blog comment spam, including trackback and pingback spam. Finally, you can enjoy a spam-free WordPress blog! Includes spam-free contact form feature as well....
WP-Hashcash
No More Spam
WP Hashcash is an antispam plugin that eradicates comment spam on WordPress blogs. It works because your visitors must use obfuscated javascript to submit a proof-of-work that indicates they opened your website in a web browser, not a robot. If the javascript check fails, WP Hashcash n.........
WP-Hashcash Extended
No More Spam
WP Hashcash is an antispam plugin that eradicates comment spam on WordPress blogs. It works because your visitors must use obfuscated javascript to submit a proof-of-work that indicates they opened your website in a web browser, not a robot. If the javascript check fails, WP Hashcash n.........
WP-SpamShield Anti-Spam
An exceptionally powerful and user-friendly WordPress anti-spam plugin that eliminates comment spam, trackback spam, contact form spam & registration spam....
Anti-Spam by CleanTalk - No Captcha, no comments & registrations spam
No CAPTCHA, no questions, no counting animals, no puzzles, no math and no spam bots....
NoMoreCaptchas
NoMoreCaptchas is enterprise-level spam protection for sites of all sizes.
Put an end to those annoying Captcha codes that slow down or even send away your users! NoMoreCaptchas authenticates human beings and blocks bots based on the one thing that can never be faked - their behavior....
WangGuard
Our API works over SSL, so all connections are secure connections. This is mandatory for all European websites because you are sending information. We are Europeans, so we respect the law, even the most demanding of all Europe, the Spanish law. Use a service that does not comply with all European la.........
Google Captcha (reCAPTCHA) by BestWebSoft
Google Captcha (reCAPTCHA) plugin allows you to implement a super security Captcha into web forms. Google Captcha (reCAPTCHA) is a free CAPTCHA service that helps to digitize books, newspapers older radio shows.
This plugin can be used for login, registration, password recovery, comments forms.
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Ads Manager WP/BB
Use this plugin to quickly and easily insert Any Ad code Unit to your posts and BuddyPress sections including Forum topics....
