Good site security is a necessity if running your own website and an expectation from paying clients.
I’ve found Wordfence Security to be an excellent plugin for securing sites. It’s well designed and easy to use.
It is flexible in its options and can just be left to automatically monitor your site, update and schedule scans. Judging by the number of positive reviews, I am not the only one enjoying peace of mind from having it installed.
It’s also got features that I hope I’ll never need. I don’t want to need to use its “Clean my Hacked Site” button any time soon!