Security plugin: Sucuri Security – Auditing, Malware Scanner and Hardening

Advantages for you in free version:

  • contains a very good malware scan – use it from time to time
  • checks for new or changed files in your WP installation and alerts you – you can also restore content of these files using Sucuri
  • tab page “Hardening” shows you security problems you can easily fix with Sucuri – use all “hardenings” except for Firewall (paid option) and “Plugin + Theme Editor” (you may sometimes want to change CSS)