How to Perform a WordPress Security Audit

Ensuring the security of your WordPress website is a top priority, but how confident are you in its current state? If you've never conducted a WordPress security audit—or if it's been a while since your last one—it can be difficult to know for certain whether your site is fully protected.

A WordPress security audit helps you uncover vulnerabilities in your site's security that you might not have otherwise discovered. And if you don't find them yourself, you run the risk of hackers discovering them first.

At SiteLock, we offer a suite of industry-leading WordPress security solutions designed to keep your website protected. Even so, websites fortified with the most advanced security controls require regular testing and audits to ensure all other safeguards are functioning effectively. This comprehensive guide explains why WordPress security audits matter, how to prepare for them, and provides a clear, step-by-step checklist to help you confidently check the security of your site.

Why your WordPress site needs a security audit

From brute force attacks to cross-site scripting (XSS) or SQL injections, there's no shortage of cybersecurity threats that WordPress sites could encounter. Without the right WordPress security measures in place, these attacks can often be crippling to website owners, compromising sensitive data, disrupting operations, and eroding user trust. Beyond these immediate consequences, the long-term repercussions can include extended downtime, financial losses, and irreversible damage to your brand's reputation.

Most successful attacks stem from vulnerabilities in a WordPress website—and these vulnerabilities can be discovered in a lot of different places, including your WordPress core, plugins, and themes. For instance, outdated plugins and themes are common entry points for attackers, while improperly secured WordPress cores can leave your site exposed to known exploits. With a WordPress security audit, you can pinpoint these vulnerabilities and patch them before they lead to a security incident. Regular audits not only protect your site from immediate threats but also help maintain user trust, ensuring your visitors feel secure while interacting with your website.

Preparing for your WordPress security audit

There are a few steps you'll want to take before you begin a WordPress security audit to help ensure that everything goes smoothly. A critical first step is to back up your site before the audit. This will help you prevent accidentally losing any important data during the process.

Next, you'll want to make sure you have all the right tools and plugins available to perform a comprehensive security audit. This could include activity log plugins, security scanners, SSL/TLS configuration tools, and any other security-focused tools you might need to thoroughly assess your site's security posture.

Lastly, make sure that you have administrative access to your WordPress dashboard. This will be necessary to perform all the various checks and updates the audit will require.

WordPress security audit checklist

Having a well-defined strategy for your WordPress website audit is key to thoroughly covering all critical areas. The following step-by-step security checklist will guide you through the audit process:

Step 1: Review and update core components

Start by ensuring all your WordPress core, themes, and plugins are updated to the latest versions. You can do this by going to your WordPress dashboard and checking for available updates under the Updates section. If any core files, themes, or plugins are out of date, they will be displayed here and can be updated directly from your dashboard as well.

If there are any themes or plugins that you aren't using, these should be removed. Removing unused themes will help eliminate vulnerabilities by reducing your website's attack surface.

Next, make sure that all of your plugins are functioning correctly and are compatible with your site. Test your site's functionality after updates to ensure everything is working as expected. If you encounter any issues, consider rolling back to a previous, stable, and secure version or contact the plugin developer for support.

Step 2: Assess user roles and permission

It's important to understand who has access to your WordPress site and the permissions they are given. To review this information, go to the Users section of your WordPress dashboard and view the list of active accounts. If any accounts are no longer in use or belong to inactive users, they should be immediately removed.

For each active account, ensure the assigned role aligns with the user’s specific responsibilities. For instance, administrative-level access should be restricted to individuals who genuinely require it. Limiting unnecessary privileges not only boosts security but also reduces the likelihood of accidental or unauthorized changes to your site.

Step 3: Evaluate site configurations

How your WordPress site is configured can have a big impact on its security, and it's crucial to ensure your configuration settings are aligned with security best practices.

Start by reviewing the wp-config.php file, as it plays an important role in your site’s security. Confirm that file permissions are properly set to restrict unauthorized access, and ensure that secret keys (SALTs) are in place to enhance authentication security.

Next, verify that your site has an active SSL certificate. This will enable HTTPS and ensure that all data transmitted between your website and its users is encrypted, protecting sensitive information from interception.

For added protection, secure your login page by implementing reCAPTCHA or using plugins to limit login attempts. These measures can effectively block unauthorized access attempts and reduce the risk of brute force attacks, keeping your site and its users safe.

Step 4: Run malware and vulnerability scans

The next step in a WordPress security audit is to check for any existing malware on your site. This process is streamlined with tools like SiteLock's malware scanner, which not only identifies malware but also detects additional vulnerabilities such as backdoors and outdated software. A comprehensive solution from SiteLock ensures your audit addresses security risks quickly and effectively.

During this step, you should also scan for blacklisted IP addresses and unauthorized access attempts to detect any suspicious activity on your site. Be sure to set a regular schedule for malware and vulnerability scans, which will help you identify issues proactively. These scans are an important part of a WordPress security audit, but they should also be conducted independently on a more frequent schedule.

Step 5: Set up a firewall

A Web Application Firewall (WAF) monitors incoming traffic on your site and is essential for blocking threats like DDoS and cross-site scripting (XSS) attacks. Cloud-based WAF solutions like the one offered by SiteLock will provide your website with a critical line of defense against malicious traffic.

If you use a hosting provider with built-in firewall functionality, verify that the firewall is configured correctly and actively monitoring traffic. You should also regularly review firewall logs to identify potential issues proactively.

Step 6: Review hosting provider security

The security measures provided by your hosting provider play a key role in safeguarding your WordPress site. Verify that your provider offers features like daily backups, malware protection, and server-level security optimizations. If your hosting provider doesn't offer these features, you may want to consider upgrading your plan or switching to a provider with more robust security options.

Next, confirm that the server configurations are up-to-date and optimized for security. This includes verifying the PHP and database versions are current and secure to minimize vulnerabilities.

Monitoring your WordPress site after an audit

A comprehensive WordPress security audit will provide important insights and details about your site's security posture, but it's equally important to continue monitoring your site after the audit is complete. This starts with enabling security notifications that provide immediate updates anytime a threat is detected. It's also important to regularly monitor server audit logs and WordPress login activity to identify any suspicious activity.

For continuous, hands-free monitoring of your website, automated website monitoring tools, such as those provided by SiteLock, are a great option to consider. These tools constantly scan websites for vulnerabilities, threats, suspicious activity, and more, enabling you to adopt a more transparent and proactive approach to WordPress security.

Strengthening WordPress security measures

Once you've performed a WordPress security audit and shored up any vulnerabilities that the audit found, there are several steps you can take to further strengthen your WordPress security.

Start by implementing advanced security features like IP address blocking and two-factor authentication. IP address blocking will restrict traffic from sources known to be malicious, while two-factor authentication adds a strong layer of protection against unauthorized logins.

Using WordPress security plugins to automate routine security tasks like performing updates and scanning for malware will also be a big boost to your site's security. And, last but not least, be sure to continue conducting routine security audits to address new threats and vulnerabilities as they emerge.

Protect your WordPress site with Sitelock

Ongoing, proactive security is essential for WordPress website owners, and routine security audits are a key part of this process. By following the steps outlined in this guide, you can ensure that your site is kept secure and free of vulnerabilities.

At SiteLock, we offer a cutting-edge suite of WordPress security tools designed to help website owners conduct security audits and keep their sites safeguarded. Explore SiteLock's WordPress security services and WordPress malware removal solutions today to discover how they can help protect and maintain your website's security!

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