So far I like this plug in. It scans your wordpress for security issues....then gives you a "score"...ie...mine was 65 out of 105.
I did not have any errors or issues activating.
You should know however that while it tells you what the problems are..you will have to figure out how to fix them yourself.
I am not a coder but I have been able to fix every issue on my own. If you're a newbie don't be intimidated. I simply Googled every issue until I found the solution. I learned a lot more in the process and I think it's good to learn as much as one can. I had already added some other security fixes prior to this but was unaware of others that this plugin pointed out.
They do offer to fix the issues for you...I would just rather figure it out on my own. I still have a couple of issues to fix. Score now is 85/105