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To protect your Blog from automated spambots, this plugin adds invisible formfields to your comment form.

By: kubi23.

(12)
Last Updated: 4 months ago
10,000+ active installs
Compatible up to: 4.4.5

This plugin password protects your WordPress blog with a single password.

By: Daniel Chatfield and danielchatfield.

(40)
Last Updated: 9 months ago
10,000+ active installs
Compatible up to: 4.4.4

Prevent brute force logins on your WordPress site with Google's reCAPTCHA.

By: ash.matadeen.

(3)
Last Updated: 5 months ago
10,000+ active installs
Compatible up to: 4.4.4

This plugin patches the existent vulnerabilities in Revolution Slider plugin, including the latest SoakSoak vulnerability.

By: dragosgaf.

(14)
Last Updated: 1 year ago
10,000+ active installs
Compatible up to: 4.1.12

Adds Captcha Code anti-spam methods to WordPress forms. Forms include comments form, registration form, lost passwordform and login form.

By: Vinoj Cardoza.

(13)
Last Updated: 1 day ago
10,000+ active installs
Compatible up to: 4.6

Monitor files under your WP installation for changes. When a change occurs, be notified via email. This plugin is a fork of WordPress File Monitor.

By: Scott Cariss.

(15)
Last Updated: 4 years ago
10,000+ active installs
Compatible up to: 3.4.2

Client-side javascript blocks all spam bots. XHTML 1.1 compliant.

By: and Donncha O Caoimh.

(2)
Last Updated: 6 years ago
10,000+ active installs
Compatible up to: 3.0.5

User Enumeration is a method hackers and scanners use to get your username. This plugin stops it.

By: Fullworks.

(12)
Last Updated: 5 months ago
10,000+ active installs
Compatible up to: 4.4.4

This WordPress plugin investigates web requests with simple WordPress-specific heuristics to identify and stop most obvious attacks. There exist a few

By: seoegghead.

(2)
Last Updated: 7 years ago
10,000+ active installs
Compatible up to: 2.8

Obfuscate email addresses to deter email harvesting spammers, while retaining the appearance and functionality of hyperlinks.

By: Scott Reilly.

(9)
Last Updated: 2 months ago
10,000+ active installs
Compatible up to: 4.5.3

Plugin helps you identify security problems with your wordpress installation. It scans your blog and give a security grade based on passed tests.

By: bsndev.

(6)
Last Updated: 2 years ago
10,000+ active installs
Compatible up to: 4.0.12

It blocks any spams, login attempts and malicious access to the admin area posted from the specific countries, and also prevents zero-day exploit.

By: tokkonopapa.

(30)
Last Updated: 5 days ago
10,000+ active installs
Compatible up to: 4.6
(17)
Last Updated: 2 weeks ago
10,000+ active installs
Compatible up to: 4.2.9

Protect WordPress login, registration, comment and BuddyPress registration forms with Google's No CAPTCHA reCAPTCHA.

By: Collizo4sky.

(53)
Last Updated: 5 months ago
9,000+ active installs
Compatible up to: 4.4.4

Sabre is an acronym for Simple Anti Bot Registration Engine. It's a set of counter measures against spam registration on your blog.

By: dlo.

(11)
Last Updated: 4 years ago
9,000+ active installs
Compatible up to: 3.3.2

Create central "Enter your password" page and the password entered determine which page the user sees next.

By: Brian Layman.

(15)
Last Updated: 1 year ago
8,000+ active installs
Compatible up to: 4.2.9

Manage user roles and Capabilities, create new roles and change default role.

By: mahabub81.

(13)
Last Updated: 4 months ago
7,000+ active installs
Compatible up to: 4.5.3

Several types of captcha to protect your site in one easy to use plugin.

By: wppal.

(10)
Last Updated: 3 years ago
7,000+ active installs
Compatible up to: 3.5.2

Add reCAPTCHA to your WordPress login form

By: Xrvel.

(18)
Last Updated: 2 weeks ago
6,000+ active installs
Compatible up to: 4.5.3

An authentication framework that handles authorization/communication with most popular web services.

By: Beau Lebens, Michael Adams (mdawaffe), Justin Shreve, Joey Kudish, and others.

(5)
Last Updated: 9 months ago
5,000+ active installs
Compatible up to: 4.4.4

Allows you to extend the list of mime-types supported by the builtin uploader.

By: Peter Westwood.

(1)
Last Updated: 7 years ago
5,000+ active installs
Compatible up to: 2.9.2

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