Sucuri Security – Auditing, Malware Scanner and Security Hardening的作者是Sucuri Inc.,目前有700,000+个有效安装。已经Tested with 5.3.3版本的wordpress。
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. It offers its users a set of security features for their website, each designed to have a positive effect on their security posture:

Security Activity Auditing
File Integrity Monitoring
Remote Malware Scanning
Blacklist Monitoring
Effective Security Hardening
Post-Hack Security Actions
Security Notifications
Website Firewall (premium)