No worries, if your website got infected with malware, it does not mean all of your hard work is lost yet. An infected WordPress site can be cleaned up using such plugins as WordFence or Anti-Malware Security. You can also find an easy-to-use step-by-step tutorial on how to clean up an infected WordPress site using the WordFence plugin here.

To avoid similar issues in the future, we would recommend updating, backing up your WordPress site as often as possible and avoiding themes/plug-ins from unknown or 3rd party providers, as well as keeping only the most up-to-date plugins on your site only. For more advice on how to secure your WordPress site from any intrusions and unwanted hackers check out this guide here.

Executive Reply for the common WordPress security errors:

I can see that you have a lot of plugins installed, seems like you have multiple caching plugins installed and some security plugins. Having two separate caching plugins can cause issues with your website, even cause security issues as well, I recommend choosing one and sticking with it and removing the second one.

Additionally, keep in mind that any security plugins that you have set up can make changes to your .htaccess file too.

If you still feel like it might be related to malware, I recommend following the below tutorial and scanning your website for any malware: