Best free security plugin

Plugin Does a great job.
As any security plugin, it must be tested with your particular configuration of wp. But so far, all my sites work perfect with this awesome plugin.

As a sidenote, firewall prevents large files from being uploaded sometimes (>4 mb). But I’m sure there’s a fix for that. I just haven’t looked for it.

If you are about to use it, just follow the instructions! When I read bad reviews I see more emotional statements than reasons.