Ultimate WordPress Security Guide for 2026

Malware costs site owners BILLIONS of dollars every year.

The best way to secure your WP site? Install a WordPress security plugin.

WordPress admin often rely on security advice from other admin. This is a bad strategy, because while the advice is well-meaning, it does not come from expertise. On top of that, hackers are smart. They find new ways to defeat old defences.

Why is this article different? Because it is put together from real experience.

MalCare protects 100,000+ sites. We see new malware every day. Our firewall blocks billions of attacks a day.

If you are looking for actionable steps to improve security of your WordPress site? You’ve found the ultimate, battle-tested guide.

The best part? You don’t need to be a security expert to do any of it.

TL;DR: Install a WordPress security plugin like MalCare to secure your site against hackers. MalCare is the best defence for your site. It protects your data, visitors, and resources from hackers.

What is WordPress security?

WordPress security involves protecting your site from hackers and malware. It comprises a series of WP security measures that together shield your site, your data, and your visitors from hackers trying to steal data.

You may find articles about how to prevent SQL injection or phishing attacks, or even how to remove WordPress redirect malware.

The point is that you need to find the security gaps on your site, and protect them effectively.

How WordPress sites get hacked

WordPress is not insecure; we make our sites insecure with the addition of plugins and themes.

Plugins are an essential part of WordPress, but they often contain hidden vulnerabilities. Vulnerabilities are the number one reason for WordPress attacks.

Having said that, WordPress security is not a black box. Since you know hackers exploit vulnerabilities, the key to stopping them is to prevent those exploits. 

WordPress itself comes automatic security updates, strong password checks, and more measures that work to secure your WordPress site. The problem is that these are not enough on their own.

Your site needs comprehensive WP security management.

1. Install a security plugin

A WordPress security plugin is comprehensive line of defence. It combines deep scanning, malware removal, and a firewall shield against attacks.

It identifies and fixes threats that you might miss. Good ones will also include login security features like 2FA and brute force protection.

We recommend MalCare as a solid choice for the following reasons:

Most importantly, MalCare doesn’t use server resources to keep your site secure.

All the scanning, cleaning, and blocking is done on MalCare servers. So if you have seen a security plugin slow your WordPress site down, you will see the opposite effect with MalCare.

🔥 Installing a robust security plugin is the most effective way to secure your WordPress website.

2. Opt for a proactive firewall

Installing a powerful WordPress firewall is the next step of securing your WordPress site.

It is a shield against attacks on WordPress, and blocks malicious traffic before it reaches your site.

Firewalls prevent attacks like:

To block these attacks effectively, we recommend MalCare’s Atomic Security. Atomic Security is a smart firewall that goes beyond basic protection. It blocks vulnerabilities from being exploited even before they are discovered. It has prevented zero-day attacks on thousands of sites.

There are different types of website firewalls, categorised by where they are installed and how they work. The most effective firewalls load before WordPress, so they can filter out all the bad traffic.

3. Scan for malware daily

A malware scanner is an early warning signal for trouble on your site.

Daily deep scans of your site, alert for hacks as they happen. This enables you to halt the damage before it gets worse. We have seen that malware gets worse the longer it stays on your site.

Deep scans are an underrated, effective way to secure your WordPress site.

With MalCare, you will have a definitive answer as to whether or not your site is hacked. Once you have the scan results, you can upgrade to clean your website in minutes. 

MalCare’s free scanner is a powerful scanner because it:

Important: If you discover malware on your website, clean it immediately. Otherwise you run the risk of Google blacklisting your site, or your web host suspending it.

How to pick a good malware scanner

Malware scanners are not all the same. Thus, they have varying levels of efficacy. Some are blacklist scanners, and others are just vulnerability scanners. Neither of these are going to protect your site from hackers completely.

Most malware scanners use a signature database instead of heuristics to detect malware. Signature matching compares code on websites to malware signatures to detect malware. 

For this to work, the signature database needs to be up-to-date. However, malware is essentially code, and can have infinite permutations. Therefore, hackers just have to modify attack code to defeat this detection process. Secondly, the team maintaining the database needs to have seen the malware to add it to the database. This is easy with free plugins and themes, but premium software often gets left out. We have seen malware go undetected in themes from Envato and Themeforest, or in page builders like Elementor and Divi for this very reason. 

Heuristic detection is vastly more effecting when you want to scan your site for malware.

4. Check for vulnerabilities

WordPress security vulnerabilities are the primary reason why websites get hacked. Hackers exploit vulnerabilities to gain unauthorised access to a website, and install malware.

WordPress plugins and themes are all built with code, and despite best efforts, vulnerabilities are likely to exist. In fact, with AI more vulnerabilities will be discovered.

Use a vulnerability scanner regularly, so that you stay on top of any new ones found.

5. Run updates regularly

When a WordPress vulnerability is discovered, the best case is that a security researcher discovers it. They inform the developers. The developers issue an update to patch the vulnerability. And, once an update is released, the researcher makes the vulnerability public.

Hackers exploit the vulnerabilities on sites that haven’t been updated.

This is why regular updates are critical. Security updates often address vulnerabilities, and therefore prevent attacks, like unsecured file uploads or SQL injections.

Updates also bring improvements and new features, helping your site run better overall. It’s a simple step but one that significantly boosts your site’s security.

Important: Never use nulled themes and plugins. They are usually chock full of malware, and because they are pirated, they don’t get updates from the developer.

How to update your site, safely

Now, updating your site might seem daunting. What if your site crashes after a plugin update? What if it loses an important functionality? What if it changes your site radically?

This is why you should install a backup plugin before you update anything. This ensures that you can easily recover your site in case anything goes wrong.

Additionally, use the UpdateLens feature for increased clarity. UpdateLens scores all updates based on several factors to help you understand which updates are safe to apply without major disruptions to your site.

6. Use strong passwords

Poor password security are the second major reason why WordPress sites get hacked, after vulnerabilities. Passwords are often the weak spot in WordPress security for two reasons:

7. Enable 2FA

Two-factor authentication (2FA) adds an extra step to the login process. It requires a separate, time-sensitive code in addition to your password. Even if someone gets your password, they can’t log in without the second factor.

You can enable 2FA for your users right from the MalCare dashboard. Your users just need to install an authentication app like Google Authenticator or Authy, and they are all set.

Bonus: block multiple failed logins

You should also limit login attempts. This prevents bots from trying endless password combinations. After a set number of failed attempts, the site temporarily locks the user out. MalCare automatically blocks repeated incorrect login attempts to thwart bots.

If a legitimate user is locked out of the site by mistake, they can solve a CAPTCHA to regain access.

8. Protect WordPress sessions

Every time you log into WordPress, you are creating a session. A session exists for the duration you use WordPress for, and ends when you log out. But what happens if you close your browser window without logging out of your site?

When you access your site the next time, you will find that you don’t need to login again. But how did this happen?

The answer: WordPress cookies.

Cookies are small pieces of data stored in a user’s browser. They help a site remember things like your login status and preferences as you navigate.

However, these cookies are vulnerable to theft. If a hacker steals a cookie, they can hijack the session. This means they can pretend to be the logged-in user (which is you) and perform unauthorized actions on your site.

This is where WordPress salts and security keys come in. These are secret codes used to encrypt the information in cookies. They make it much harder for anyone to steal or forge cookies.

Any time you suspect unauthorized entry, update your WordPress salts and security keys. It strengthens your defenses against session hijacking.

9. Use SSL 

SSL or Secure Socket Layer encrypts information sent between your site and its visitors. This makes it difficult for hackers to steal data like passwords or personal info.

An SSL certificate makes this encryption possible. It verifies and secures your site’s connection. When you have an SSL certificate, your website URL changes from http:// to https://. This reassures visitors that their data is safe, boosting their trust in your site.

SSL certificates are important because they protect your visitors’ information and can improve your site’s search engine ranking.

Many web hosts offer free SSL certificates with their hosting plans. Alternatively, you can install an SSL certificate on your server, after getting it from a trusted certificate authority.

To ensure SSL is always used, edit your wp-config.php file and force SSL for all logins and admin activities.

10. Backup your website daily

Malware can wipe sites out. Sometimes, web hosts suspend websites or delete them if they have malware on them. All this could leave you having to start everything from scratch.

Backups, especially with reliable backup plugins, are insurance against these worst-case scenarios. A backup is a copy of your website’s data and files. If something goes wrong on your site, a backup helps you restore everything quickly.

Regular backups are an often overlooked but essential step in any WordPress security guide.

Daily backups ensure you never lose more than a day’s work. This safety net keeps your site running smoothly without worry. Whether an update fails or a hacker strikes, you can bounce back with minimal downtime.

11. Set security headers

Security headers are rules that your site sends to web browsers. These rules help control how browsers handle your site. They add a layer of protection against threats like cross-site scripting and clickjacking.

There are several types of security headers you can set. For example, the Content Security Policy header indicates which resources the browser can load. The X-Frame-Options header prevents your site from being embedded in other sites, reducing the risk of clickjacking attacks.You can set security headers using a plugin, which often provides an easy way to implement them without much hassle. Alternatively, if you are using an Apache server, you can bolster your site’s .htaccess security. The .htaccess file has server configurations and can set headers to block threats effectively. 

12. Choose a good web host

It is a common misconception that web hosts are responsible for security. They are, but only to a certain extent.

They are certainly not responsible for malware infections, because people mistakenly assume that their servers aren’t secure. On the contrary, the web host has a lot to lose if malware is discovered on their servers, and therefore their security is usually watertight. 

We say ‘usually’ because web hosts occasionally face data breaches too. In November 2021, GoDaddy had a breach that exposed the SFTP and database credentials of 1.2 million users. Since GoDaddy is one of the biggest web hosts, the number was correspondingly huge. 

However this is an exception and not the rule. Generally speaking, good web hosts have network firewalls, and a ton of other security infrastructure to protect their servers from malware. 

If you are on the lookout for a good web host, these are the things you should look for: 

Choosing a good web hosting provider is akin to building a strong foundation for your website. Once you’ve got it, you can forget about it. 

13. Force SFTP usage

When you connect to your website’s filesystem, you typically use a protocol like FTP or SFTP.

FTP, or File Transfer Protocol, is a method of transferring files between your computer and server. However, FTP is not secure; it sends data in plain text, making it easy for hackers to intercept it.

SFTP, or Secure File Transfer Protocol, encrypts the data, making it safe from snoopers. It ensures that your login credentials and the files you transfer stay private.To make sure you always connect securely, you can edit your site’s wp-config.php file and force WordPress to use SFTP whenever possible.

14. Perform security audits

Security audits are a detailed checkup of your site to find and fix security gaps.

During an audit, you examine various parts of your site, like plugins, themes, user accounts, and server settings. The goal is to spot any issues that could make your site vulnerable to hackers. Consequently, you apply WordPress security updates, if available, and secure your site.

Keeping a track of user activity

Hackers like to take advantage of insufficient logging to hide their tracks. Use an activity log to keep an eye on all actions on your site, like when a post is modified, a plugin or theme is uninstalled, a user has logged in, etc. This helps you catch unusual behaviour early, and trace and resolve potential problems.

Audit site users

Regularly reviewing user accounts is another important step. Ensure that all users have appropriate access and remove any accounts that are no longer needed. Inactive accounts typically have the same password for a long time. If that password is exposed in a data breach, it can make your site vulnerable too.

You should also implement a “least privileges” policy. This means giving users only the access they need to perform their tasks and nothing more. For example, a subscriber does not need editor access, or a contributor should not have admin access. This reduces the risk of accidental or intentional damage.

Remove any unused plugins or themes

Once in a while, review the list of installed plugins and themes. If they are not in active use, these tend to get overlooked for updates. Then, if vulnerabilities are found, they become a weak link in your WordPress security. 

It is best practice to remove any unused themes and plugins from your WordPress site. At the very least, remove those that are deactivated.

What makes a site insecure?

An insecure site is an easy target for hackers and can lead to serious problems. Here are some common factors that make a site insecure:

Common misconceptions about WordPress security

There’s a lot of misinformation out there about WordPress security. Much of it is well-meaning, but it is still bad advice. 

WordPress is not secure

Is WordPress secure? Yes.

WordPress is well-developed as a secure CMS. While it didn’t start out as the most secure, obviously, but over time, the security issues have been straightened out. Releases and patches have been addressed, and it is now one of the best options available. 

The reason that WordPress attracts hackers and malware is because of its immense popularity. More websites are powered by WordPress, so it makes sense for hackers to find security loopholes in it, because the payoff is bigger. 

In fact, because of this constant threat of hacks, WordPress has eliminated many of the security issues that still exist in other CMS. 

My website is too small to be hacked

Websites have value whether it is obvious or not. All websites have assets that can be used for a multitude of purposes. Website owners tend to believe that smaller sites fly under the radar of hackers. This is not true. While bigger sites have more value that doesn’t negate the value of a small site altogether. 

For instance, a small site may not be a store, and therefore not have financial details. But it can be used as a part of a botnet. Or it may have a small dedicated following, which can be tapped for phishing scams via their email addresses. 

Because people tend to use the same passwords for different accounts, it is theoretically possible to now hack into another site or system using this information. Your website played a small but crucial role in this chain of events.

Your web host is responsible for malware on your website

Although a reliable web host adds a layer of security, it’s not enough by itself. 

Most hacks happen due to vulnerabilities within your site. For example, your visitors use weak passwords. Or your plugins aren’t up to date. All of these are your responsibility to manage and secure.

Additionally, web hosts do not look kindly at sites that have malware on them. They have a lot to lose if there is malware discovered on their servers. That is why they block your site, or worse, delete it if they detect malware.

More security plugins mean more security

You might think that if one security plugin does one thing well, and another plugin does another thing well, you could combine them to secure your site. We get the logic behind it.

However, multiple security plugins on your site can actually conflict and cause other issues. A single, robust security plugin is often more effective than multiple, weaker options.

Take MalCare for example. It has a robust malware scanner and a smart firewall for the basics. Then, it also has vulnerability scanners, bot protection, backups, and much more. Combined together, MalCare has pretty much all you need to secure your WordPress site.

All WordPress hardening advice is good advice

We typically do not recommend hardening your WordPress site to ensure its security.

You will find several measures on other sites. And doing them may give a sense of doing something, but not all advice is useful or necessary. Some of it will actively cause issues:

These security-through-obscurity methods do little to improve security. Instead, focus on strong measures.

You should not have to configure your security settings so minutely, because it can become problematic if you are managing more than one website. Plus, a good firewall will take care of these issues out of the box. Additionally, avoid the following:

Why is WordPress security important?

WordPress security is a must because your website holds valuable data, including information about users and content. Protecting this data is essential to prevent unauthorized access and misuse. If a hacker breaches your site, it can lead to identity theft or financial loss for both you and your users.

Security also plays a key role in maintaining your site’s reputation. A hacked site can lose visitor trust, which negatively impacts SEO rankings and decreases web traffic. This can have long-term effects on your site’s success.

Ensuring strong security helps preserve your site’s integrity. It’s far better to prevent hacks than to deal with the aftermath and costly recoveries. Keeping your site secure encourages users to trust and engage with your services or content.

Finally, proper security ensures that you meet legal compliances related to data protection. This helps avoid potential fines and legal troubles.

Final thoughts

In conclusion, WordPress security is an essential part of effectively managing a website. By using proactive security measures, you can protect your site, data, and visitors from potential threats.

Securing your WordPress site requires several strategies. This includes installing security plugins, setting strong passwords, adding CAPTCHAs, and more. Security plugins like MalCare can simplify this process. MalCare offers features like malware scanning and a robust firewall that ensure your site’s security.

Ultimately, WordPress security is about being ready and staying alert. It helps you keep your site running smoothly, maintain your reputation, and ensure you follow legal rules. This gives you peace of mind while managing your website.

Security in WordPress is a critical aspect of website management. Following a dedicated guide to WordPress security ensures you stay protected.

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