Certainly, maintaining a secure WordPress website is a multifaceted effort. While security plugins play a crucial role, it’s important to combine them with good security practices. Here’s a summary of the mentioned security plugins and their pro versions:

Free Versions:

1. Wordfence Security:

   • Active Installations: 4 million+
   • Features: Firewall protection, malware scanning, login security, real-time traffic monitoring.

2. Sucuri Security:

   • Active Installations: 600,000+
   • Features: Malware scanning, blacklist monitoring, file integrity monitoring, post-hack security actions.

3. iThemes Security:

   • Active Installations: 1 million+
   • Features: Malware scanning, brute force protection, two-factor authentication, file change detection.

4. All In One WP Security & Firewall:

   • Active Installations: 800,000+
   • Features: Login protection, file system security, database security, firewall protection.

5. Jetpack Security:

   • Features: Brute force protection, malware scanning, spam filtering.

Pro Versions:

1. Sucuri Security Pro:

   • Features: Website backup, CDN, DDoS protection.
   • Price: Starts at $199.99 per year.

2. MalCare:

   • Features: Firewall protection, brute force protection, website management tools.
   • Price: Starts at $99 per year.

3. Jetpack Security:

   • Features: Real-time backups, spam protection, automated malware scanning.
   • Price: Starts at $7.95 per month.

4. Wordfence Premium:

   • Features: Country blocking, two-factor authentication.
   • Price: Starts at $99 per year.

5. iThemes Security Pro:

   • Features: Two-factor authentication, Google reCAPTCHA, malware scanning.
   • Price: Starts at $80 per year.

Additional Recommendations:

• Regularly update your WordPress installation, themes, and plugins.
• Use strong and unique passwords for all accounts.
• Implement two-factor authentication wherever possible.
• Conduct regular security audits and scans.
• Follow best practices for website security.

Remember, a layered approach to security is the most effective. While these plugins provide valuable features, combining them with vigilant maintenance and user practices will create a robust defense against potential threats.