I got a password error when I logged in to my site and when I logged in by resetting my password, I saw that all the settings I made were gone, and I saw that the following plugin was installed and all other plugins were disabled. How can a plugin be installed by itself?
Contacted my hosting provider. They said safe svg plugin made this. This plugin uploaded another plugin to my website and that plugin break everything. They fixed problem for me.
That sounds good, take care of your website by updating every theme and plugins. Also, use itheme security plugin, this will help you to improve your website security.