# Identifying and avoiding harmful Joomla extensions

> Spot risky or badly coded Joomla extensions before you install them, and follow best practices to keep your site secure.

Source: https://helpcenter.ruachost.com/apps/joomla/identifying-and-avoiding-harmful-joomla-extensions/

Extensions add powerful functionality to Joomla, but poorly coded or malicious ones can compromise your site. On **ruachost.com**, administrators should carefully evaluate extensions before installation to ensure security and stability.

## Why Harmful Extensions Are a Risk

- Can introduce **security vulnerabilities** (SQL injection, XSS, backdoors).
- May cause **site instability** or conflicts with other extensions.
- Could include **malware or hidden code** that compromises data.
- Often lack updates, leaving sites exposed to exploits.

## How to Identify Harmful Joomla Extensions

1. ### Check the Source

   - Only download extensions from the official Joomla Extensions Directory or trusted developers.
   - Avoid pirated or “nulled” extensions, which often contain malware.
2. ### Review Developer Reputation

   - Look for established developers with positive reviews.
   - Check if the extension is actively maintained and updated.
3. ### Verify Compatibility

   - Ensure the extension supports your Joomla version.
   - Outdated extensions may break functionality or introduce vulnerabilities.
4. ### Inspect Code Quality

   - Poorly coded extensions can slow down your site or conflict with others.
   - If possible, review the code or consult a developer.
5. ### Check for Security Reports

   - Search the Joomla Vulnerable Extensions List (VEL).
   - Avoid extensions flagged for known security issues.

## Best Practices to Avoid Harmful Extensions

- **Keep Joomla and all extensions updated** to the latest versions.
- **Test new extensions** on a staging site before deploying to production.
- **Limit the number of extensions**—only install what you truly need.
- **Monitor logs** for suspicious activity after installing new extensions.
- **Back up your site** before adding or updating extensions.