Easy to Use and Seems Effective

I was having problems with a bot accessing my WordPress site and adding malicious links. I implemented most of the basic features of this plugin, including the login lockout, and blacklisted the IP address where the attacks were originating from. This was very helpful. The plugin was easy to set up, with clear instructions. I get an email whenever someone (or something) suspicious tries to login to my site, so I can monitor and counter threats fairly proactively. The options I implemented do not slow down my site, and as far as I can tell (so far), none of my other plugins seem to be negatively affected.