WordPress Security: 6 Vital Security Layers To Protect Your Site
As the most popular content management system, WordPress receives a staggering number of attacks daily. An average WordPress website encounters nearly 56 requests probing for vulnerabilities every 24 hours. These attempts target weak passwords, vulnerable plugins or themes, and hidden backdoors.
While WordPress core undergoes rigorous security testing and offers rock-solid protection, its vast ecosystem of free and paid themes and plugins can significantly increase your attack surface. In fact, Wordfence Intelligence researchers uncover over 500 vulnerabilities in the WordPress ecosystem every month.
Given these persistent threats, implementing solid security measures is no longer optional — it’s essential. This guide covers six vital security layers you can add to fortify your WordPress website against potential attacks and the specific actions you can take within each to ensure you get the most out of them.
WordPress Security: Quick Start Guide
- Select a Secure Hosting Environment
- Implement SSL/HTTPS Encryption
- Keep WordPress Core, Themes, and Plugins Updated
- Set Up Regular On-Site and Off-Site Backups
2. Access Control and Authentication
- Enforce Strong Passwords
- Assign User Roles Based on the Least Privilege Principle
- Implement Two-Factor Authentication
- Mitigate Brute Force Attacks
- Secure WordPress’s Access Point
3. Proactive Monitoring and Defense
4. Advanced Security Configurations
- Optimize File and Directory Permissions
- Disable In-Dashboard File Editing
- Turn Off WordPress Application Passwords
1. Core Security Measures
While WordPress core undergoes rigorous security testing, your website’s security relies on your infrastructure decisions. These core security measures form your first layer of defense against potential attacks.
Select a Secure Hosting Environment
Choosing the right hosting provider is one of the most critical security decisions you’ll make for your WordPress website. A secure host actively protects your website through multiple security measures, starting with proper account isolation. This “jailing” between accounts ensures that if one website on a shared server gets compromised, the attacker can’t gain access to neighboring sites.
Your host should support SSH or SFTP connections rather than traditional FTP and implement ModSecurity or another web application firewall that works harmoniously with a solid WordPress firewall like the Wordfence Firewall.
Beyond that, ensure your host provides 24/7 security-aware support, WHOIS privacy (to reduce phishing spam), and protection from DDoS attacks (also called distributed denial of service attacks).
Additionally, while shared IP addresses are acceptable, verify if dedicated IP options are available to protect yourself from being blocklisted due to a neighboring site’s malicious behavior.
Implement SSL/HTTPS Encryption
SSL (Secure Sockets Layer) encryption is a fundamental requirement for any WordPress website. When you enable HTTPS, you create an encrypted connection between your visitors’ browser and your server, ensuring sensitive information like login credentials (even to the wp-login page), personal data, and payment details remain secure during transmission.
This security works best when the encryption runs directly on your server. Think of it like a sealed envelope: you want your message to stay sealed from sender to receiver.
While cloud-based security services might need to open and reseal that envelope at intermediate points, endpoint security solutions like Wordfence maintain a direct, secure connection that ensures your site visitor’s data stays between you and your server — without vulnerable checkpoints in between.
Most quality hosting providers include free SSL certificates through Let’s Encrypt. This implementation on your own server prevents a common security risk seen with cloud solutions, where attackers can potentially bypass security layers by finding and directly accessing your server’s IP address.
Pro tip: Implementing an SSL not only protects your personal data but can also positively impact your SEO rankings, as HTTPS is a confirmed ranking factor for Google.
Keep WordPress Core, Themes, and Plugins Updated
Outdated WordPress core, themes, and plugins are among the most common entry points for malicious actors. These outdated components can contain known vulnerabilities that attackers can exploit.
In fact, Wordfence’s security researchers uncover hundreds of vulnerabilities each month in themes and plugins, many of which could allow attackers to take control of your website.
For example, in November 2024, the Wordfence Intelligence team identified a critical authentication bypass vulnerability in Really Simple Security (formerly Really Simple SSL) affecting over 4 million WordPress websites. The vulnerability allowed attackers to gain full administrator access to any affected site when two-factor authentication was disabled.
Keeping your WordPress core, themes, and plugins updated is crucial for protecting your website from such vulnerabilities. If you’re a hobbyist or a small business owner, you can enable auto-updates to protect your website.
However, if you rely on too many plugins or external code, a new update could cause something unexpected to break while you’re away. In that case, you can trust Wordfence to monitor your WordPress components and alert you when updates are available or a plugin contains a known vulnerability.
Beyond that, if you manage multiple websites, Wordfence Central provides an overview of all your websites’ security status. From a single dashboard, you can easily scan for outdated plugins across all your sites and update them.
For mission-critical websites, consider testing updates in a staging environment first to ensure they don’t affect your site’s functionality.
Additionally, before installing any new plugin, check its history in Wordfence’s vulnerability database. Be wary of plugins that haven’t been updated in over 6 months, as they may contain unpatched vulnerabilities.
Set Up Regular On-Site and Off-Site Backups
If your website gets attacked, having reliable backups can mean the difference between restoring your site in minutes versus spending days (and potentially losing thousands of dollars) on cleanup.
To start, your backup strategy needs to address both frequency and storage location. Daily backups might be necessary for frequently updated websites, while weekly backups might be fine for static websites.
However, irrespective of the schedule you choose, always keep multiple versions. The Wordfence security team regularly encounters sites that were compromised months before the owners noticed, making recent backups potentially infected.
You should also store your backups in multiple locations — never solely rely on your hosting provider’s backups. Think of it like this: if malicious hackers gain access to your server, they could potentially delete your website and its on-server backups.
By maintaining off-site backups in secure, independent locations, you ensure protection against not just attackers, but also against accidental deletions.
Moreover, consider supplementing your hosting provider’s backups with dedicated backup plugins that support encryption and secure file transfer. Lastly, remember to regularly test your backup restoration process in a staging environment to avoid a problem when you actually need to restore a backup.
2. Access Control and Authentication
Your WordPress website is only as secure as its weakest authentication point. While attacks grow more sophisticated, compromised credentials remain one of the most common entry points for bad actors.
Enforce Strong Passwords
Users often choose convenience over security — using simple combinations like “wordpress321” or reusing passwords across multiple sites, making your website vulnerable to credential stuffing attacks (where an attacker tries credentials from a previous data breach).
Instead, you can implement a solid password policy to protect your website:
- Minimum length of 12 characters with mixed case, numbers, and special characters.
- No sequential numbers (123), keyboard patterns (asdf), or repeated letters (hhh).
- Regular password changes every 90 days for administrator accounts.
Using a WordPress security plugin like Wordfence, you can even force admins and publishers to use strong passwords that fulfill specific requirements. Additionally, Wordfence prevents malicious hackers from using passwords leaked in recent data breaches by prompting admin users to reset their leaked passwords upon logging in.
As it can be hard to remember such complex passwords, encourage your team to use a password manager to generate and securely store these complex credentials. This will make it easier to maintain strong, unique passwords across all your company accounts.
However, even the strongest passwords can be compromised through social engineering. So, you should also train your team to recognize phishing attempts to avoid sharing passwords with a bad actor.
Assign User Roles Based on the Least Privilege Principle
One of the most effective ways to limit potential damage from compromised accounts is implementing the principle of least privilege — giving users only the permissions they need to perform their tasks.
Out of the box, WordPress provides five default roles that offer increasingly restricted access levels:
- Administrator: Full website control, including settings and user management.
- Editor: Content management across all pages and posts.
- Author: Can publish and manage their own posts.
- Contributor: Can write posts but cannot publish them.
- Subscriber: Can only manage their profile and read content.
Assess each team member’s responsibilities before assigning roles. For instance, if your content writers only need to draft posts for review, giving them the Contributor role is sufficient — there’s no need to grant them Author privileges that allow direct publishing.
Be aware that plugins and integrations can introduce additional custom roles with their own set of permissions. For example, WooCommerce adds roles like “Shop manager” and “Customer,” each with specific capabilities related to e-Commerce.
Beyond that, regular access audits are crucial for maintaining this security principle. Schedule monthly reviews of your user list to identify and remove inactive accounts, downgrade excessive permissions, and ensure departed team members no longer have access.
In short, remember every additional permission you grant becomes a potential security vulnerability if that account is compromised.
Implement Two-Factor Authentication
Since phishing is so common, relying on passwords — even strong ones — isn’t enough to protect your WordPress website. Two-factor authentication (2FA) adds a crucial second layer of security by requiring users to verify their identity through a secondary method, typically a time-based one-time password generated on their mobile device.
As a result, even if attackers manage to steal or guess a user’s password through phishing, brute force attacks, or data breaches, they still can’t access your website without the temporary code.
Wordfence offers a robust 2FA solution that seamlessly integrates with your WordPress login process. Users can easily set up authentication using popular apps like Google Authenticator, Authy, or Bitwarden Authenticator.
Since 2FA significantly impacts your site’s security, consider making it mandatory for all administrator accounts and strongly recommended for other user roles.
Mitigate Brute Force Attacks
WordPress’s default configuration presents a significant security vulnerability — unlimited password attempts without built-in protection against automated attacks. This means that without additional security measures, attackers can continuously attempt to guess your login credentials indefinitely using bots.
With Wordfence, you can add multiple layers of brute force protection through its advanced login security features. It automatically tracks failed login attempts and implements intelligent IP blocking when suspicious patterns are detected.
Additionally, Wordfence lets you implement Google’s reCAPTCHA v3, which analyzes behavior to distinguish between legitimate users and automated attacks without requiring users to solve puzzles or click checkboxes.
Note: If you purchase Wordfence Premium, you can block malicious IPs attacking the WordPress ecosystem from interacting with your website. Plus, you can also prevent IPs from high-risk regions from accessing certain parts of your site, such as your website’s login page.
Secure WordPress’s Access Points
One of the most common mistakes out there is keeping the default “admin” username. Since this username is so widely known, it gives attackers half the credentials they need to breach your site.
However, true security goes beyond just changing usernames. Wordfence recommends implementing geographic access controls for your login page, restricting access to only those countries where your legitimate users are located.
For instance, if your team is based in the United States and Canada, there’s often no legitimate reason to allow login attempts from other regions.
Beyond that, you can also turn off potentially vulnerable features you’re not using. For example, while useful for remote access to WordPress, XML-RPC is frequently targeted in brute force attacks as it allows attackers to test multiple passwords in a single request.
Similarly, it’s also a good practice to turn off pingbacks and trackbacks — legacy features rarely used in modern WordPress sites — to remove unnecessary attack vectors.
Lastly, while many security gurus recommend changing the default WordPress login URL, Wordfence doesn’t recommend it as a security measure since automated scanners can easily detect alternate login pages.
3. Proactive Monitoring and Defense
Even with strong authentication measures in place, your WordPress site needs active defense mechanisms to identify and block malicious traffic before it can exploit vulnerabilities.
Deploy a Web Application Firewall (WAF)
A web application firewall acts as your site’s security guard, analyzing every incoming request before it reaches your WordPress installation. While traditional firewalls operate at the network level, a WAF understands and protects against application-level threats, blocking malicious traffic from interacting with your website.
The Wordfence firewall is explicitly designed for WordPress and is continuously updated based on intelligence gathered from protecting 5+ million (and counting) WordPress websites.
Wordfence’s security team analyzes thousands of attacks daily to develop and deploy new firewall rules that protect its users against emerging threats. Premium users receive these new rules immediately, while Wordfence Free users receive them after a 30-day delay.
Common attacks the Wordfence firewall protects against include:
- SQL injection attempts that could compromise your database.
- Cross-site scripting (XSS) attacks that could hijack user sessions.
- Malicious file uploads that could introduce backdoors.
- File inclusion vulnerabilities that could expose sensitive data.
- Zero-day exploits through pattern matching and behavior analysis.
Additionally, unlike cloud-based firewalls that route traffic through external proxy servers, Wordfence’s endpoint firewall operates directly on your server. As a result, it can inspect unencrypted HTTPS traffic and make more intelligent decisions about blocking malicious requests.
Conduct Regular Malware Scans
WordPress sites are often targets for malware infections, with attackers developing new ways to inject malicious code into core files, themes, and plugins.
Without regular scanning, malware can operate undetected for months, potentially stealing data, redirecting visitors, or using your server resources for cryptocurrency mining.
With Wordfence’s security scanner, you can scan for malware beyond basic file checks by leveraging Wordfence’s extensive threat intelligence network.
Drawing from data collected across over 5 million WordPress sites, Wordfence’s scanner is continuously updated to identify known malware signatures, plugin vulnerabilities, and emerging threats. Premium users receive these threat intelligence updates immediately, while free users have to wait 30 days.
In particular, the Wordfence security scanner provides:
- Signatures to detect well-known malware, backdoors, and malicious code (premium users get new malware signatures as soon as they’re released, enabling real-time detection)
- Identification and remediation of vulnerable plugins and themes
- Comparison of core files against WordPress repository versions with the ability to restore them to factory defaults
- Identification of malicious URLs in posts and comments
- Discovery of publicly accessible sensitive files
- Detection of suspicious admin users created outside WordPress
Unlike general-purpose malware scanners, Wordfence’s security scanner is built specifically for WordPress, allowing it to understand the content of files and code patterns unique to the WordPress ecosystem. This WordPress-specific approach enables it to detect sophisticated malware that generic scanners might miss.
Set Up Activity Logging
Without activity logs, it’s difficult to trace the source of a security breach or understand how an attacker gained access to your site. By setting up logging, you can monitor suspicious behavior patterns and respond to potential security incidents.
With Wordfence, you can use the Audit Log to capture security-related events on your website and store them securely off-site in Wordfence Central, protecting them from tampering by attackers.
The Audit Log monitors critical events, including:
- User events: New registrations, role changes, 2FA activation/deactivation.
- Authentication: Login attempts, password resets, application password usage.
- Plugin changes: Installation, deletion, activation, and updates.
- WordPress core changes: Updates or downgrades.
- Settings modifications: Default role changes, registration settings, site URL changes.
- Theme changes: Installation, updates, deletions, and customizations.
Free users get access to Preview mode – a summary of a limited list of events, while Premium users can store a complete list of events and related metadata for up to 30 days.
4. Advanced Security Configurations
Advanced security configurations add crucial hardening to your WordPress website’s security posture.
While basic security measures protect against common threats, these technical adjustments prevent sophisticated attacks that exploit system vulnerabilities.
Optimize File and Directory Permissions
While many WordPress installations run with default file permissions, the Wordfence security team regularly discovers malware in sites compromised through incorrect permission settings.
WordPress is typically installed on a Linux server and Linux uses the POSIX permission standard to control file and folder access. These permissions can be expressed via symbolic notation (read/write/execute) or octal numbers to determine access levels. Typically, a good recommendation is to opt for 755 for directories (the owner can read/write/execute, while others can read/execute) and 644 for files (the owner can read/write, while others can only read).
However, these permissions can be too permissive for shared hosting environments. In fact, the Wordfence security team often finds compromised websites that weren’t directly targeted by attackers. Instead, the attackers gained access through another vulnerable site on the same server.
As a result, for shared hosting, Wordfence recommends setting directories to 750 (the owner can read/write/execute, the group can read/execute, but others have no access) and files to 640 (the owner can read/write, the group can read, but others have no access). This prevents other users from reading your files while maintaining necessary access to user accounts and the web server.
Disable In-Dashboard File Editing
WordPress includes a built-in code editor that lets you modify your theme and plugin files directly from the WordPress dashboard. While convenient for quick fixes, the feature can become a liability if your admin account is compromised.
For instance, any attacker who gains access to an administrator account can immediately modify your theme and plugin files to inject malicious code. Since these happen through WordPress’s built-in editor, they bypass file permission restrictions and aren’t always caught by file integrity monitoring.
To turn off this feature, add the following code to your wp-config.php file:
define(‘DISALLOW_FILE_EDIT’, true);
For editing theme and plugin files, Wordfence recommends using SFTP (the secure version of FTP) or your hosting provider’s file manager as it improves security (fewer people have access to it). Additionally, it might provide better code editing features.
Turn Off WordPress Application Passwords
WordPress introduced the application passwords feature in WordPress 5.6, allowing users to create additional passwords for third-party applications to access their accounts. While it offers useful integrations, it also introduces potential security risks.
In particular, while application passwords themselves are well-implemented, attackers can exploit the feature’s interface through social engineering attacks. By mimicking legitimate services, bad actors can trick users into connecting their WordPress accounts to malicious applications.
To protect against these risks, Wordfence turns off application passwords by default. Wordfence recommends keeping this feature disabled unless you have a specific need for it.
If you need to use them, ensure all users with access understand the security implications.
5. Incident Response
Even with robust security measures in place, security breaches can occur. A well-documented incident response plan can mean the difference between a minor security incident and a catastrophic breach that damages your brand’s reputation and bottom line.
Develop an Incident Response Plan
When a breach occurs, the pressure and urgency often lead to rushed decisions that can worsen the situation. As such, having a predetermined plan ensures your team can respond methodically rather than reactively.
To create an effective response plan, focus on three key components: identification procedures, containment steps, and communication protocols.
Start by defining how to recognize different types of breaches. Then, outline immediate actions like forcing user logouts and changing passwords, and finally, establish guidelines for notifying relevant stakeholders.
Once you’ve identified and contained a breach, the next crucial phase is recovery. Your plan should help you quickly assess whether to restore from backups or clean existing files, verify file integrity, and test site functionality after recovery. Having these decisions mapped out in advance reduces recovery time and prevents costly mistakes.
Get Expert Help
Even with a solid incident response plan, you might need professional assistance — especially for mission-critical websites where every minute of downtime impacts your business.
If you find yourself in such a situation, Wordfence offers expert assistance through two specialized plans designed for different needs and urgency levels.
Wordfence Care is ideal for business websites that need proactive protection and priority support. The plan includes yearly site audits, daily security scans, real-time malware removal, and expert support from WordPress security professionals.
For enterprise websites or online stores where immediate response is critical, Wordfence Response offers site audits twice a year, 24/7/365 support from dedicated security experts with a guaranteed 1-hour response time.
Additionally, both plans include all the same features of Wordfence Premium like a real-time IP blocklist, country blocking, and advanced tools for brute force attacks.
6. Long-Term Security Policy
Securing your WordPress website isn’t a one-time task — it requires ongoing monitoring and regular policy reviews.
Conduct Regular Security Audits
Regular security audits are crucial for identifying potential vulnerabilities before attackers can exploit them. By systematically reviewing your website’s security posture, you can spot and fix weaknesses before they become serious problems.
Wordfence’s powerful scanning and reporting tools can help you maintain a proactive security posture. It automatically scans your entire WordPress installation for malware, vulnerabilities, and misconfigurations.
Beyond automated scans, periodically review your security policies and procedures. This includes evaluating user access levels and password policies and updating procedures to ensure they align with your current security needs.
Stay Informed About the Latest WordPress Security Threats
The WordPress security landscape changes constantly as new vulnerabilities are discovered or new attack methods emerge. Staying informed about these changes helps protect your website against the latest threats.
You can keep up-to-date with the latest WordPress security news by following the Wordfence blog and subscribing to Wordfence’s security newsletter — Wordfence publishes new research on a weekly basis.
Even if you’re not using Wordfence, periodically check the Wordfence vulnerability database to confirm your website isn’t using unsafe plugins or themes.
Final Thoughts: The Ultimate WordPress Security Guide
While WordPress remains a popular target for malicious hackers, you can protect your website (and business) from cyberattacks by covering all your bases.
To check off most of the items on your security checklist in one go, opt for the best WordPress security plugin, Wordfence. With over 5 million active installations and more than a decade of protecting WordPress sites, Wordfence is the security solution WordPress websites worldwide trust.
Wordfence offers a powerful firewall, an intelligent security scanner, and solid login security — all constantly updated based on the research of its threat intelligence team.
If you’re just starting out, try Wordfence Free to get essential security features. If you’ve got a business website, Wordfence Premium offers advanced protection like real-time IP blocklisting, the latest malware signatures, and real-time firewall rules.
Wordfence Care and Wordfence Response offer expert assistance and guaranteed response times for mission-critical websites.