If you’re a freelancer building or maintaining WordPress sites, security should be at the top of your priority list. WordPress powers over 43% of the web, making it a big target for hackers. The stakes are even higher for freelancers: a single breach can mean lost clients, reputation damage, and even legal problems.
This guide is your all-in-one resource for top WordPress security practices for freelancers in 2025, from understanding the biggest threats to implementing real-world solutions trusted by industry experts.
Table of Contents
The Evolution of WordPress Security
WordPress has always attracted hackers due to its popularity and open ecosystem. In the early years, the main threats were brute force login attempts and comment spam. As WordPress matured, so did attack methods like plugin vulnerabilities, file injections, cross-site scripting (XSS), and supply chain attacks became more common.
Key milestones:
- 2010–2015: Rise of mass plugin/theme vulnerabilities (e.g., TimThumb, Revolution Slider).
- 2016–2020: WordPress introduced auto-updates for core and security releases.
- 2021–2025: Automated botnets, zero-day exploits in plugins, and social engineering increased; plugin repository review standards tightened; more hosts started offering built-in firewalls and malware scanning.
Despite improvements, most successful attacks today still come from simple issues: outdated software, weak credentials, and poor hosting.
For more about the history and trends, see WPScan Vulnerability Database and Sucuri’s Hacked Website Report
Why Security is Critical for Freelancers
Security is not just a technical requirement, it’s a business necessity. When you manage client sites, you’re responsible for their online presence, revenue, and data.
Why it matters:
- Trust: Clients expect safe, reliable websites. A breach can destroy trust overnight.
- Business Continuity: Hacks lead to downtime, lost sales, and costly fixes.
- Legal Risk: Data breaches can lead to lawsuits or regulatory penalties under GDPR, CCPA, and other laws.
- Portfolio Impact: If one of your sites is defaced or blacklisted, it can hurt your reputation and future work.
- Freelancers Are Targets: Hackers don’t discriminate and bots scan for vulnerabilities everywhere. Managing multiple sites increases your risk.
Real example: In 2024, over 80% of hacked WordPress sites had outdated plugins or themes. Many freelancers lost clients after being unable to recover sites quickly or prevent repeated attacks.
The Biggest Threats to WordPress Sites
WordPress powers over 43% of all websites, making it a prime target for cybercriminals. While WordPress itself is secure when kept up-to-date, the flexible ecosystem of plugins, themes, and integrations opens up several potential risks especially for freelancers managing multiple client sites. Here are the biggest threats you need to watch for:
1. Outdated Plugins and Themes
The vast majority of successful hacks in recent years have exploited known vulnerabilities in outdated plugins or themes. Attackers use automated bots to scan for sites running old versions with published security holes.
For example, the infamous Slider Revolution plugin bug allowed hackers to inject malware on thousands of sites in 2014, and similar exploits keep appearing. Even a single forgotten update can expose all of your client sites to attack.
2. Weak Passwords & Brute Force Attacks
Hackers often use bots to try thousands of common passwords on the WordPress login page. If you or your clients use weak, simple, or repeated passwords, your site is extremely vulnerable.
In 2024, brute force attacks accounted for a significant percentage of WordPress breaches, as many users still rely on default usernames like “admin” and passwords like “password123”.
3. Abandoned or Poorly Coded Plugins
Plugins and themes that are no longer supported or rarely updated can quickly become security liabilities. Hackers target old code that lacks recent security patches. Even inactive plugins can be exploited if they remain installed on your site.
It’s important to regularly audit all plugins and themes and remove anything that isn’t necessary or actively maintained.
4. Cheap or Insecure Hosting
Not all web hosts are created equal. Shared, low-cost hosting often cuts corners on security, leaving sites without firewalls, malware scanning, or account isolation. If a neighbor on your shared server gets hacked, it can sometimes affect your site, too.
Reliable managed WordPress hosts provide proactive security, regular updates, and quick support.
5. Lack of Reliable Backups
Without recent, secure backups, recovery from a hack, server failure, or even human error can be slow, expensive, or impossible. Many site owners only realize the importance of backups after it’s too late.
Automated, offsite backups that are tested regularly are essential for quick recovery and peace of mind.
6. Malware, File Injections & Spam
Attackers inject malicious scripts or files into your site to steal data, deface pages, or spread spam. Sometimes, malware sits quietly for months before activating, making detection tricky.
Common symptoms include strange redirects, new unknown users, or flagged search results. Tools like Wordfence and Sucuri regularly detect new waves of malware tailored for WordPress.
7. Exposed Admin/API Endpoints
By default, WordPress admin and API endpoints like /wp-login.php and xmlrpc.php are publicly accessible. Bots exploit these endpoints to launch brute force or DDoS attacks. If not properly secured or limited, these can be easy entry points for hackers.
8. Poor File Permissions
Incorrect file and folder permissions can allow hackers to upload, modify, or delete files.
For example, setting folders to 777 (read/write/execute for everyone) instead of the more secure 755 can make it easy for attackers to take over your site.
9. Phishing and Social Engineering
Sometimes, hackers don’t need to break in, they convince you or your clients to hand over the keys. Fake emails from “hosting support” or “plugin updates” can trick users into giving away passwords or installing malicious software.
10. Vulnerable Third-party Integrations
APIs, payment gateways, and external scripts can all introduce new security risks if not kept up to date or properly configured.
For example, an insecure API key can allow attackers to access sensitive data or services linked to your site.
Top WordPress Security Practices for Freelancers
In this section, we will learn about the top WordPress security practices for freelancers along with actionable steps and pro tips:
1. Keep Everything Updated
Keeping your WordPress core, plugins, and themes updated is the first line of defense against hackers. Most successful attacks exploit old, unpatched vulnerabilities. Regular updates and removing unused extensions keep your site and your clients secure.
Actionable Steps:
- Schedule weekly plugin, theme, and core updates.
- Use tools like WPUmbrella, ManageWP or MainWP for bulk management.
- Remove unused or abandoned plugins/themes.
- Test major updates on a staging environment before applying to live sites.
Pro Tip: Premium plugins or themes not updated through WordPress.org require manual checks.
2. Use Strong Passwords & Enable Two-Factor Authentication (2FA)
Weak or reused passwords make it easy for attackers to gain access. Always use strong, unique passwords for every account, and enable 2FA to add an extra layer of protection. This greatly reduces the risk of brute-force attacks and unauthorized logins.
Actionable Steps:
- Require strong, unique passwords for every user (never “admin”).
- Use a password manager (Bitwarden, 1Password).
- Enable 2FA on all admin/editor accounts.
- Change passwords regularly and never reuse across sites.
3. Limit Login Attempts and Protect Admin URLs
Bots try thousands of password combinations to break into WordPress sites. Limiting login attempts and using a custom admin URL makes these attacks much harder. Adding CAPTCHA or reCAPTCHA to your login form further blocks automated threats.
Actionable Steps:
- Install Limit Login Attempts Reloaded.
- Change
/wp-login.phpto a custom URL with WPS Hide Login. - Block or limit XML-RPC usage unless needed.
- Add Cloudflare Turnstile, reCAPTCHA or hCaptcha to forms.
4. Choose Secure, Managed WordPress Hosting
The quality of your hosting has a huge impact on security. Managed WordPress hosting providers have strong firewalls, daily backups, and proactive malware scanning. They isolate your site from others, so a hacked neighbor won’t put your website at risk.
Actionable Steps:
- Select a managed WordPress host with built-in firewalls, daily backups, and malware scanning (e.g., WordPress.com, Pressable, or Kinsta).
- Ensure isolation between sites on shared plans.
- Verify SSL support and backup policies.
5. Automate Offsite Backups
A recent backup is your safety net if something goes wrong. Use automated tools to store daily backups offsite, such as on Google Drive or Dropbox. This ensures you can quickly restore your site after a hack, hardware failure, or accidental deletion.
Actionable Steps:
- Use UpdraftPlus, BlogVault, or Jetpack Backup.
- Schedule daily backups to offsite storage (Dropbox, Google Drive, Amazon S3).
- Test restore capability regularly.
- Don’t rely only on your host’s backups.
6. Harden File Permissions and Disable Unused Features
Setting the right file and folder permissions prevents attackers from uploading malicious scripts or editing site code. Disabling unused features like XML-RPC if you don’t need it, reduces the number of entry points hackers can exploit.
Actionable Steps:
- Set 644 for files and 755 for directories.
- Move
wp-config.phpabove web root if supported. - Block PHP execution in
/wp-content/uploads/with a.htaccessrule or plugin. - Disable XML-RPC unless needed.
7. Use a Trusted Security Plugin
Security plugins provide active protection by blocking threats, scanning for malware, and alerting you to suspicious activity. Choose a well-maintained, reputable plugin and avoid running more than one comprehensive security tool to prevent conflicts.
Actionable Steps:
- Use a single reputable plugin: Wordfence, or Sucuri Security.
- Scan weekly for malware or vulnerabilities.
- Monitor logins and file changes.
8. Enforce HTTPS & SSL
HTTPS encrypts all data between your site and visitors, protecting login details and personal information. Most managed hosts offer free SSL certificates, and forcing HTTPS site-wide is now a must for SEO and user trust.
Actionable Steps:
- Get a free SSL certificate from Let’s Encrypt via your host.
- Force HTTPS site-wide (Really Simple SSL or Perform).
- Update internal links and images to HTTPS.
9. Monitor Activity Logs and Set Alerts
Activity logs let you spot suspicious actions, like unauthorized logins or plugin changes, early. Setting up email alerts for important events helps you react quickly to potential problems before they escalate into major incidents.
Actionable Steps:
- Use WP Activity Log or similar.
- Set alerts for admin logins, file changes, or new users.
- Review logs weekly for suspicious behavior.
10. Educate Clients and Document Your Security Process
Many security breaches happen because of user error, not technical flaws. Providing clients with clear security guidelines and documenting your processes helps them avoid risky behaviors and builds your reputation as a proactive, trusted expert.
Actionable Steps:
- Give clients a simple security checklist.
- Offer ongoing maintenance services.
- Share documentation on updates, backups, and recovery steps.
- Explain why security steps matter.
Pros and Cons of Common WordPress Security Strategies
| Strategy | Pros | Cons |
|---|---|---|
| Manual Hardening | Full control, less bloat | Time-consuming, easy to miss steps |
| Security Plugins | Easy, broad coverage | Can slow site, plugin conflicts |
| Managed Hosting | Firewalls, backups, support | More expensive, less DIY control |
| Third-party Monitoring | Expert oversight, faster response | Ongoing costs, not fully hands-on |
Most freelancers use a hybrid approach with a combination of secure hosting, a good plugin, and regular manual checks.
WordPress Security Checklist
I have prepared a list of checklist items for the WordPress Security:
- Update WordPress core, plugins, and themes weekly.
- Remove all unused plugins and themes.
- Require strong, unique passwords for every user.
- Enable 2FA on all admin/editor accounts.
- Limit login attempts and use a custom login URL.
- Choose managed, secure hosting with daily backups.
- Automate daily offsite backups and test restores.
- Harden file permissions and disable XML-RPC if not needed.
- Install a trusted security plugin (Wordfence, Sucuri, or iThemes).
- Enforce HTTPS/SSL site-wide.
- Monitor activity logs and set alerts for changes.
- Educate clients and provide security documentation.
Ready to Secure Your WordPress Site?
Don’t wait until your website or your client’s website is at risk. As a certified WordPress expert, I help freelancers and business owners build, secure, and maintain their WordPress sites for total peace of mind. Get a custom security review, best practice recommendations, and ongoing support, all tailored to your unique needs.
Conclusion & Next Steps
WordPress security isn’t a one-time task. For freelancers, it’s a continuous investment that protects your clients, your reputation, and your future income. By following these proven practices, you’ll stand out as a reliable, professional freelancer who puts client safety first.
Actionable Steps:
- Audit all current sites for security gaps.
- Set up automated reminders for all routine security tasks.
- Offer a maintenance plan as an extra service.
- Always stay informed!
Frequently Asked Questions
Outdated plugins/themes and weak passwords.
No, choose one comprehensive plugin to avoid conflicts.
For content sites, daily backups would make sense and for eCommerce/membership and other dynamic websites, hourly backups are great.
Yes. Let’s Encrypt provides industry-standard SSL protection.
Take it offline, restore from backup, update all passwords/plugins, scan for malware, and communicate with the client transparently.
