When choosing add-ons for the system, it’s important to choose secure add-ons to maintain site security.

1. Version Compatibility Check: Ensure that the plugin is compatible with the latest version of WordPress. Updated versions can provide security benefits and fix known vulnerabilities.

2. Reviews and Ratings Check: Read reviews from other users and check the plugin’s rating. Positive feedback and a high rating indicate reliability and security.

3. Trusted Source: Download the plugin from trusted and official sources. If you’re using open-source code, make sure the plugin is developed by a trustworthy team.

4. Support and Updates: Check if the plugin has an active development team and if support and updates are ongoing. This affects the plugin’s ability to respond to critical periods or public security vulnerabilities.

5. Approval Level: Check if the plugin has approvals from the community or security experts.

6. Data Access: A reliable plugin will not use entrusted information unlawfully. Check the plugin’s privacy policy.

7. Ongoing Testing: Test the plugin with each WordPress update to ensure it functions properly with your other plugins.

Please note that no plugin can guarantee absolute security, but with smart choices and regular maintenance, secure plugins can serve as an important security tool in your system.

Regular updating of plugins in the system is a critical step in maintaining site security. Here are some reasons to perform regular updates of plugins:

1. Security: Frequent updates address security vulnerabilities in plugins. Security gaps in plugins can be exploited by attackers to breach your site.

2. Bug Fixes: Updates include bug fixes that address issues and glitches in the plugin. This impacts performance and compatibility with new versions of WordPress.

3. Support for New WordPress Versions: With updates, the plugin will adapt to new versions of WordPress and serve the latest functions and features.

4. Adaptation to New Standards: Updates align with new standards, ensuring the plugin installs and operates optimally.

5. Technological Advancements: Updated plugins incorporate new technologies and tools, providing an advanced and up-to-date user experience.

6. Focus on Organizational Security: With up-to-date plugins, you can focus on organizational security and add an additional layer of protection to your site.

7. Continued Support and Development: Stability in updates improves support and development by the plugin’s developers, ensuring long-term assistance.

Due to the significant role of plugins in the system, regular updates are a vital part of the security management process and site maintenance.