Sucuri Security is undoubtedly one of the most popular security plugins for WordPress. You can download it for free, but if you plan on using some of its more advanced features, you’ll have to sign up for one of Sucuri’s paid plans. However, even if you decide to go with the free version only, it should keep your website safe and protected. As soon as you install this plugin, it will automatically run a scan to ensure there are no malware, link injections, infected or suspicious files, etc. The free version of the plugin takes care of the security activity auditing (it detects things such as failed login attempts), file integrity monitoring (it informs you if someone tries to make any changes to your files), blacklist monitoring (it basically makes sure your website isn’t blocked on blacklist engines), and effective security hardening (it removes all vulnerabilities). It also includes security alerts and post-hack security actions (if a security breach occurs, the plugin will provide a list of steps to take).

Regarding the paid version, it enables you to add a powerful DNS level WordPress firewall with CDN to your website. The DNS firewall is particularly useful because it adds protection to the DNS layer of your web page. This further means that no connections to malicious websites are possible. Another cool thing about it is that it helps increase the overall speed of your website as well as its performance. Some pricing plans enable you to put a stop to DDoS attacks (hackers overwhelming their targets with a huge amount of Internet traffic). Other packages include multiple variations of SSL certificates, which are also incredibly useful for keeping your content secure.

As you can tell, this plugin comes with some pretty impressive features. Whether you choose to go with the free version or one of the paid plans, you’re overall website security will get significantly stronger.