WordPress can be more secure on your website hosting with the below mentioned Plugins:
Login Lockdown will record the IP address and time-stamp of every failed login. If certain failed login attempts were made from same IP range in certain period of time, all requests from that range will be disabled.
WordPress File Monitor
WordPress File Monitor, monitors the editing, adding or deleting files during the WordPress installation process. Any of the function if performed, the application automatically generates an email alert which is sent to the specified address. Time-stamp of one of the above 3 modifications is recorded.
WordPress Database Backup
WordPress Database Backup plugin needs to be installed upon your first installation, allowing you to easily backup your wp-database core tables. Any other tables can be saved on the same database. Backup can be securely be kept on to your HDD, email or domain space. By installing this plugin you can create a backup for the entire database to avoid any hassles if the original database is deleted by any reason or is hacked.
Invisible Defender defends you any spambots for the registration, comment or login forms by adding the 2 extra fields that were hidden by CSS(cascading style sheet). Your dashboard will display the number of blocked spammers.
AskApache Password Protect
AskApache Password Protect, protects the wp admin-directory, wp-includes, wp-content, plugins. The Admin panel is protected with a effective htaccess protection, preventing all spambots and unwanted users to access you site, providing you the complete control over your site.
Admin SSL is very useful to protect the admin pages, posts, secured logins, supports all SSL setups and encrypted cookie content. The plugin is compatible on WordPress 2.3-2.7 versions only.
WordPress Semisecure Login
WordPress Semisecure Login increases the security of your WordPress login. It uses the client-side MD5 encryption on password when the user log-ins. Although many of the users neglect it, if they are using ForceSSL or AdminSSL.
WordPress Security Scan
WordPress Security scanner scans the WordPress installation for file/directory permissions, admin protection/security issues, recommends you the correct actions, and helps in fixing the vulnerabilities as a whole.
Force SSL requires the users to use the SSL connection (secure connection) to connect to your site, redirecting the requests of regular http to request for new trusty http.
Secure WordPress helps in securing you WordPress-Installation, and removes the any error information from your login pages, forums, adds index.html to plugin directory, removes wp-version except in admin-panel.