Sucuri Scanner

Sucuri Inc. is a globally recognized authority in all matters related to website security, with specialization in WordPress Security.

The Sucuri Security WordPress plugin is free to all WordPress users. It is a security suite meant to complement your existing security posture. Currently the ownership of this plugin was transferred to GoDaddy.
It offers its users a set of security features for their website, each designed to have a positive effect on their security posture