NURCaptcha inserts a reCAPTCHA on the Register Form of your site to protect it against spambots.
WordPress Website Security Protection: Firewall Security, Login Security, Database Security... Effective, Reliable, Easy to use...
The plugin Htaccess allows controlling access to your website using the directives Allow and Deny.
Cross check registered user emails with the Have I Been Pwned API for data breaches across a number of popular sites around the internet.
Protects against inadvertant update and deletion of select plugins.
WP Health Check scans your WordPress installation and reports any security issues with your site.
Safely search and replace with advanced options and undo operations.
Automatically start monitoring your sites uptime and check for hacks/malware from multiple Verelo global locations on a 5 minute rotational schedule.
Safe Signup Form is a WordPress Plugin that will forward a form submission to an email address, while preventing most automated attacks.
A wordpress security system plugin which will check every HTTP request against a given set of rules to filter out malicious requests.
LJ-XP-SW a plugin, that has the ability to crosspost a blog text to your LiveJournal (or LiveJournal-based clone) account in safe way.
Patterned after Dan Benjamin's Hivelogic enkoder, WP Emailcrypt keeps your email links safe automatically on-the-fly. No configuration.
Safe Search is a Safe Google Search widget