Rafal Dziwinski

This plugin checks if your WordPress installation is secure. It checks basic rules, inspired by Wazuh policies. 
If there is any red light, your WordPress installation is insecure. 
If all lights are green, you can’t be 100% sure that your website is impossible to hack, but it will be really, really hard.
<h3>External services</h3>
This plugin uses the php.net website to get a list of supported PHP versions.

WPEye

Julio Potier

SecuPress

This plugin will warn you if you’re using or installing a knew as vulnerable extension or removed from official repository, a security must have plugin!
This uncludes a list of a maximum knew plugins to be vulnerable to any web security flaw, and also a list of more than 10.4k plugins removed from repo.
Just install it, it’s done, you’re warned in live!

Plugin Security Checker

This plugin will warn you if you're using or installing a knew as vulnerable extension or removed from official repository, a security must have  …

WPEye vs Plugin Security Checker