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Limit rate of login attempts, including by way of cookies, for each IP. Fully customizable.

By: johanee.

(173)
Last Updated: 4 years ago
1+ million active installs
Compatible up to: 3.3.2
(2,768)
Last Updated: 4 days ago
1+ million active installs
Compatible up to: 4.6.0

Adds CAPTCHA anti-spam methods to WordPress on the forms for comments, registration, lost password, login, or all.

By: Mike Challis.

(100)
Last Updated: 1 month ago
300,000+ active installs
Compatible up to: 4.5.3
(27)
Last Updated: 2 years ago
200,000+ active installs
Compatible up to: 4.0.12
(71)
Last Updated: 4 months ago
100,000+ active installs
Compatible up to: 4.5.3

This WordPress plugin monitors web requests to identify and stop the most obvious attacks.

By: pavy and seoegghead.

(4)
Last Updated: 6 years ago
100,000+ active installs
Compatible up to: 3.0.5

*Scan all of your theme files for potentially malicious or unwanted code.*

By: builtBackwards and Ben Lobaugh (blobaugh).

(15)
Last Updated: 2 years ago
100,000+ active installs
Compatible up to: 3.9.13
(278)
Last Updated: 5 days ago
100,000+ active installs
Compatible up to: 4.6

Scans your WordPress installation for security vulnerabilities.

By: Acunetix.

(36)
Last Updated: 1 year ago
100,000+ active installs
Compatible up to: 4.2.9

WordPress HTTPS is intended to be an all-in-one solution to using SSL on WordPress sites.

By: Mike Ems.

(138)
Last Updated: 3 years ago
80,000+ active installs
Compatible up to: 3.5.2

Scans your WordPress installation for security vulnerabilities.

By: Acunetix.

(8)
Last Updated: 3 months ago
70,000+ active installs
Compatible up to: 4.2.9

Todd Lahman's comment spam blocking plugin that blocks automated spam with zero false positives.

By: Todd Lahman.

(41)
Last Updated: 11 months ago
70,000+ active installs
Compatible up to: 4.4.4

Scans your wp-content directory for vulnerable instances of timthumb.php, and optionally upgrades them to a safe version.

By: Peter Butler.

(12)
Last Updated: 4 months ago
70,000+ active installs
Compatible up to: 3.3.2

Version: 3.1 Configure SMTP mailing in WordPress, including support for sending e-mail via SSL/TLS (such as GMail).

By: Scott Reilly.

(38)
Last Updated: 5 years ago
70,000+ active installs
Compatible up to: 3.2.1

The fastest firewall plugin for WordPress.

By: Jeff Starr, aldolat, John Hoff, jameswilkes, Julio Potier, and lernerconsulting.

(44)
Last Updated: 4 months ago
60,000+ active installs
Compatible up to: 4.5.3

Lockdown WP Admin conceals the administration and login screen from intruders. It can hide WordPress Admin (/wp-admin/) and and login (/wp-login.php)

By: Sean Fisher.

(47)
Last Updated: 10 months ago
60,000+ active installs
Compatible up to: 4.3.5

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