How To Perfectly Fix A Hacked Joomla Website?

Discovering that your Joomla website has been hacked can be stressful, but acting quickly can help limit the damage. With Joomla having a user base of nearly 2 million active users in 2024, dealing with a compromised Joomla website may seem overwhelming. However, timely action can help protect your online business, customers, and website data. A hacked website can infect visitors with malware, redirect users to unwanted pages, hurt your search engine rankings, and even put sensitive customer data at risk.

In this guide, you’ll learn how to spot the signs of a hacked Joomla website, identify and remove malware safely, restore your website, and take practical steps to strengthen its security and protect it from future attacks.

How to Check if Your Joomla Website is Infected or Hacked?

List of symptoms indicating that a Joomla website may be hacked:

• Unexpected Web Page Changes: Look out for tipunfamiliar messages, links, images, or ads appearing on your web pages.
• Redirection: Your site may redirect visitors to unknown or suspicious websites.
• Automatic Logout: You might experience unexpected logouts from your admin account.
• New Admin Names: Unfamiliar administrator names may show up in your user list.
• Traffic Spikes: You could see an unexpected increase in website traffic.
• Slow Page Loading: Your website may load slower than usual.
• Altered SEO Settings: You might find changes in your SEO settings or metadata that you did not make.
• Unusual Server Logs: Check for any unusual activities recorded in your server logs.
• Email Spam: Your website may start sending out spam emails.
• Disabled Site: Parts of your website may become unexpectedly disabled or non-functional.
• Modified .htaccess: Use FTP to check the .htaccess file in your root folder for any unauthorized changes or added code.

How to Remove Malware from a Hacked Joomla Website

Detecting a hacked Joomla website is only the beginning of the recovery process. Before restoring your website or bringing it back online, make sure every trace of the infection has been removed. Malware is often hidden inside Joomla core files, third-party extensions, templates, uploaded files, or even the database. Removing only the visible symptoms may leave the website vulnerable to another attack.

A careful cleanup helps restore your website safely while reducing the chances of reinfection.

Scan the Website Before Making Changes

Start by scanning the entire website to understand the scope of the attack. Many hosting providers include malware scanning tools in their control panels. If your current hosting plan does not provide reliable malware protection, consider using AccuWeb Hosting’s Imunify360 malware protection service to detect suspicious files, hidden redirects, backdoors, and malicious scripts.

Imunify360 helps identify potential security threats before you make changes to your Joomla files. Running a complete scan can give you a clearer view of the affected areas and help you plan the cleanup process more carefully.

Review the scan results before deleting or modifying any files. A report showing the affected files can make the cleanup process easier and reduce the risk of removing legitimate Joomla files by mistake.

Identify Infected Files

After the scan is complete, review every flagged file individually. Attackers often inject malicious code into existing Joomla files instead of creating new ones, making the infection difficult to spot.

Pay attention to files that:

• Were modified recently without your knowledge.
• Contain unfamiliar PHP or JavaScript code.
• Include long blocks of encoded text.
• Redirect visitors to unknown websites.
• Appear in folders where they normally shouldn't exist.

If you have a recent clean backup, compare suspicious files with the backup version. This makes it easier to confirm whether a file has been altered.

Replace Modified Joomla Core Files

If malware is found inside Joomla core files, replace those files with clean copies from the official Joomla package that matches your installed version.

Avoid overwriting files such as configuration.php or custom templates unless you have confirmed that they have been compromised. Replacing only the affected core files helps restore the integrity of the installation while preserving your website settings and content.

Reset Every Password

Once the website has been cleaned, update every password associated with the website. This includes Joomla administrator accounts, hosting accounts, FTP or SFTP access, database users, SSH accounts, and email accounts connected to the website.

If multiple people manage the website, ensure that everyone updates their login credentials. Using strong, unique passwords and enabling two-factor authentication provides additional protection against future attacks.

Perform a Final Security Scan

Before making the website publicly accessible again, run one final malware scan. Browse several pages, test important website features, and verify that there are no unexpected redirects, unknown administrator accounts, or suspicious files remaining.

A final verification helps confirm that the cleanup was successful and that visitors can access the website safely.

Fix the hacked Joomla Website

1. Database cleanup

Cleaning the database is just as important as cleaning the website files. During an attack, hackers may insert spam links, hidden redirects, malicious JavaScript, or unauthorized administrator accounts directly into the Joomla database. If these entries are left behind, the website may continue behaving unexpectedly even after infected files have been removed.

Before making any changes, create a complete database backup. Then review your database using phpMyAdmin, Adminer, or another trusted database management tool. Look for unfamiliar administrator accounts, suspicious content, unexpected SQL entries, or injected scripts. After removing any malicious data, optimize the database tables to improve performance and ensure the website is working as expected.

2. Secure the server

If the hosting provider detects a malware infection on a website, it may temporarily suspend your site to prevent the infection from spreading to other websites on the same shared server.

Additionally, even a secure installation can be vulnerable to Joomla hacking due to server malfunctions. Here are some important security measures to keep in mind:

• Close all open ports.
• Remove any unused subdomains.
• Regularly check for configuration issues.
• If sharing a server, consider subnetting or using a VPN.
• Prevent error messages from revealing sensitive information.
• Use strong, random passwords for FTP accounts and databases.
• Ensure you have a firewall or other security solutions in place.

3. Set The Permissions

Always manage file and directory permissions carefully, avoiding full access with permission set to 777. Instead, use 755 for folders, 644 for files, and 444 for configuration.php files.

4. Check Hacked or Modified Files

If any scan or diagnostic tool reveals malicious domains or payloads, begin by searching for those files on your Joomla! Network Server. By comparing the infected files with known clean files from official sources or reliable backups, you can identify and delete any malicious changes. To manually remove the malware infection from your Joomla! files, follow these steps:

1. Log in to the server via SFTP or SSH.
2. Before making any changes, create a backup of the site files.
3. Search your files for the malicious domain or payload identified earlier.
4. Locate the recently modified files and verify their legitimacy.
5. Check the files flagged by the diff command during the core file integrity check.
6. Use clean backups or official sources to restore or compare any suspicious files.
7. Remove any unfamiliar or suspicious code from your custom files.
8. Test the site to ensure it functions normally after the changes.

In addition to the files identified during the malware scan, manually review any files that have been modified recently. Hackers often hide malicious code inside existing files instead of creating obvious new ones. Common locations include the administrator directory, templates, plugins, modules, cache folders, and temporary directories.

Compare suspicious files with a clean Joomla installation or a trusted backup whenever possible. If a Joomla core file has been altered, replace it with the original version instead of editing it manually. After completing the cleanup, test both the public website and the Joomla administrator area to confirm that everything is functioning correctly.

5. Reinstall Extensions

After a hacking incident, it’s important to reinstall all extensions to ensure they work correctly and there’s no leftover malware. Also, make sure to delete any inactive templates, components, modules, or plugins from the web server.

Sometimes, we forget to remove files linked to these outdated modules and plugins, which can still create security gaps. So, be sure to delete these files as they might have serious vulnerabilities.

Once you've cleaned your hacked Joomla website, create a backup. A solid backup strategy is essential for good security practices. Store the backup in a remote location, as keeping it on the server can also expose it to hacking.

6. Backup the website

The backup serves as a crucial safety net. Now that your Joomla website is clean and you’ve implemented important post-hacking measures, it’s time to create a backup! A solid backup strategy is fundamental to maintaining a strong security posture.

Regularly backing up your files and database archives can help prevent future issues. Extensions like Akeeba Backup offer automated scheduled backups that can be restored later if data is lost due to hacking. Learn how to back up Joomla effectively.

Tips to secure the Joomla website

1) Keep your Joomla version updated

It's simple but effective: keep your Joomla site safe by regularly updating it. Joomla releases new versions with bug fixes and improved security features.

Updating your site to the latest version can fix many vulnerabilities and keep it safe. It might be a hassle with all the extensions like plugins and templates, but it's worth it for your site's security.

2) Change the default database prefix (jos_)

Hackers target websites and try to steal data from the database to obtain all the passwords and usernames from the site's admin. To protect the website from this attack, it's important to change the default prefix to a random one.

3) Change your .htaccess file

This is another way a hacker could take control of the website.

Joomla CMS, by default, has writing permissions to the .htaccess file because it needs to update it for SEF (Search Engine Friendly) URLs. This makes your site vulnerable to attacks, so it's best to set your .htaccess permission to something like 440 (read-only) or 444 (read-only) or something similar.

4) Get away with old extensions and trash leftover files

Keep your extensions updated, delete the unsupported and old ones, and find suitable alternatives.

Sometimes you install an extension but later find it doesn't serve your purpose. Don't just leave it there forever or keep it unpublished. This can compromise your site's security. Use the uninstall feature to safely remove unwanted and useless extensions.

5) Don’t give write permission on any of your .php files

This is another reason hackers exploit your site. Giving write permission to Joomla *.php files could be why hackers visit your site and hack it easily. Always set the permission of all *.php files to 444.

Whether you're a big corporation or a small business, you're never fully safe until you routinely implement security measures. Hackers are always looking for vulnerabilities to exploit.

Is there a way to prevent Joomla websites from being hacked again?

Of course, making your Joomla website a hundred percent secure is impossible. However, you can always follow the steps below to help secure your website.

• Ensure that you have installed the newest versions of Joomla Core and other Joomla extensions.
• Utilize a reliable and robust username and password for the Administrator.
• Ignore installing any unnecessary extensions
• Utilize a security key to log in to the main Admin account
• Restrict directory permissions and regulate file paths
• Make sure to back up your website using a reliable Joomla extension regularly.
• Strengthen PHP configuration
• Enable a web application firewall
• Systematically monitor your Joomla website.
• Do not set directory or file permissions to 777, as this permits everybody to write any kind of data, and hackers might very well exploit it. All directories and files must also have appropriate CHMOD configuration.
• Allow Search Engine Friendly (SEF) URLs, as this will mask the information available to any visitor or hacker.
• Uninstall nulled plugins and templates that are not in use anymore and have not been updated.

Additionally, you could employ various Joomla security extensions to increase website security. We’ve compiled some useful extensions.

Safety extensions

Conclusion

In conclusion, securing your Joomla website is crucial for protecting your business and customers. By addressing vulnerabilities and taking proactive steps to safeguard your site, you can prevent future attacks. Maintaining and monitoring your site are key to ensuring a safe and stable online presence.

Frequently Asked Questions

Can a hacked Joomla website be recovered?

Yes. In most cases, a hacked Joomla website can be recovered by removing malicious files, restoring clean Joomla core files, updating compromised passwords, and fixing the security weakness that allowed the attack.

Does reinstalling Joomla remove malware?

Reinstalling Joomla replaces the core application files, but it does not remove malware stored inside extensions, templates, uploaded files, or the database. A complete security review is recommended before considering the website fully cleaned.

How can I reduce the risk of another Joomla hack?

Keep Joomla and all extensions updated, remove unused extensions, use strong passwords, enable two-factor authentication, perform regular backups, and monitor the website for unusual activity. Regular maintenance significantly reduces the risk of future attacks.

How often should a Joomla website be scanned for malware?

For most business websites, a weekly malware scan is a good practice. Websites that process customer information or online payments should consider automated daily scanning and continuous security monitoring.