1.  Sucuri

Is a cloud-based security platform that protects your site from hackers, malware, brute force attacks, DDoS, and other threats.

2.  iThemes Security

Is a security plugin for WordPress designed to keep hackers out. It also offers a beautiful dashboard in your WordPress backend. Using the dashboard, you can monitor activity and see security logs.

3.  BulletProof Security

Is another popular plugin that offers features that will help in protecting your WordPress website from hackers. It doesn’t offer the most user-friendly interface to work with but makes up for it in terms of features.

4.  MiniOrange’s Google Authenticator

If you’re looking to supplement a free security plugin, or you’re on a tighter budget and can’t afford a premium solution that offers a firewall, IP blocking, malware removal, and other security features, MiniOrange is a free, simple solution for getting extra login protection.

5.  Cerber Security

Is another five-star security plugin that’s effective against hacker attacks, spammers, trojans, and malware. The free version of Cerber Security offers sophisticated protection against spam and other malicious activity — but it’s not as rich in features as other free versions of plugins on this list.