I can't say enough good things about this plug-in! I discovered it six months ago when a client came to me to fix a Pharma hacked site. After having bad results with both Sucuri & WordFence, I found this plug-in which helped me deal with the hack in a short period of time. It is easy to use (and does not nag you the way that WordFence does).
A few days ago, I had other client who experience a permalink access hack. This appeared to be a brand new hack because none of the available plug-ins recognized it and no data turned up on a web search. I contacted Eli, thinking he would be interested in keeping his already fabulous plug-in up to date. In a very short period of time he was able to add support for cleaning up this hack and the client's site is functioning again.
So - thanks to Eli for providing this great software. Be sure to donate so that Eli can continue doing such a fabulous job!