I am having a lot of difficulty with the Defender plugin. Whenever I make any change with the plugin, it results in breaking the database connection not only of the site in question, but of every site on my server. This only occurs when I use the Defender plugin (it doesn't matter which site I'm on, the result is the same for all).
I first noticed this issue when trying to use the hardening feature to change the database prefix. That broke my database immediately, but I was able to fix it pretty quickly by restarting MySQL. Now, even if I so much as click "ignore" a hardening suggestion or change a setting within the plugin, it breaks all the sites on my server, resulting in "Error establishing database connection".
My first thought was that this might be a hosing issue, but since it only occurs when working directly with the Defender plugin, I thought I'd post here first.