Here's a list of 6 Best Security Plugins to improve your WordPress website's security.
iTheme Security
iTheme security formerly known as Better WP security is one of the most popular and the best WordPress security plugin. The plugin provides you 30+ ways to protect your WordPress website from malicious attacks. It strengthens user credentials by fixing common loop holes and automated attacks. The plugin is available in free and premium versions. Both have same feature but premium version include few more features like two-factor authentication, Geo ID banning and user action logging.
All in one WP security and Firewall
All in one WP Security and Firewall is the most comprehensive WordPress security plugin. This plugin protects your website by checking vulnerabilities and implementing latest techniques and security measures.
Wordfence Security
Wordfence is another leading WordPress security plugin with over 2.5 millions of downloads. The plugin scans for hacked files and monitors the access of visitors to your blog. It includes a firewall, virus scanning and new cache engine that secure your blog from malicious attacks.
BulletProof Security
Another popular WordPress plugin to secure your WordPress website is BulletProof Security. This plugin provides 1-click security solution. The plugin allows you to protect wp-admin folder of your WordPress website. This plugin secures your website against RFI, CRLF, XSS, Code injection and SQL injection hackings.
Authenticator
Google Authenticator is one of the most popular security plugin for WordPress. It offers you two-step authentication using Google Authenticator app for iPhone, Blackberry and Android. You will need a smartphone or any other device to use Google Authenticator app because this plugin app works on your dashboard and your smartphone simultaneously.
Sucuri Security
Sucuri Security is very popular security plugin that offers you website monitoring, malware removal and many mores services to secure your WordPress website. The plugin detects large number of malwares, spams, blacklisting and many other security issues.