Key Takeaways
- Update WordPress core, plugins, and themes immediately when updates are released.
- Install and configure a security plugin (Wordfence, Sucuri) — they catch attacks before they reach WordPress.
- Implement two-factor authentication on admin accounts.
- Delete unused plugins and themes — they're vulnerability entry points.
- Use strong, unique passwords and change the default 'admin' username.
WordPress is a target because of its popularity and because many sites are poorly maintained. A compromised WordPress site can become a spam distributor or malware vector. This checklist covers the 10 security steps every WordPress website needs in 2026.
What is WordPress hardening?
WordPress hardening is the practice of securing a WordPress installation through configuration changes, plugin updates, and architectural decisions that reduce attack surface and increase resilience.
1–3: Updates, Backups, and Core Configuration
The foundation of WordPress security is updating software promptly, maintaining recent backups, and configuring WordPress core securely.
Enable automatic updates for WordPress core, plugins, and themes. Most hosting providers allow this in the control panel. Set updates to run daily or immediately upon release.
Maintain automated, off-site backups. If your site is compromised or a bad update breaks something, you can restore from backup. Services like BackWPup or Jetpack provide automated backups.
Change the default WordPress table prefix (wp_) to something non-standard (e.g., wx5_). This is a low-effort change with modest security benefit that's easy to configure during installation.
4–5: Strong Authentication and Access Control
Weak passwords and single-factor authentication are responsible for a significant portion of WordPress compromises.
Enforce unique admin usernames (change from the default 'admin'). Delete any unused admin or user accounts.
Implement two-factor authentication (2FA) on all admin accounts using a plugin like Wordfence or Google Authenticator. This prevents accounts from being compromised even if passwords are breached.
6–7: Plugin and Theme Management
Unused or unmaintained plugins are a common source of vulnerabilities. Keep only what you actually use.
Delete unused plugins and themes — they're not just clutter, they're potential vulnerability entry points.
Subscribe to security notifications from the plugin developers for any critical plugins your site relies on. WordPress.org emails notifications for publicly disclosed vulnerabilities.
Experience Signal
In WordPress security assessments we've conducted, the same issues appear repeatedly: plugins dating back 3–5 years without updates, default usernames, weak passwords, no backups, and no security monitoring. Fixing these issues systematically eliminates 90%+ of practical risk.
Frequently Asked Questions
Keeping WordPress core, plugins, and themes updated is the single most important action. The majority of WordPress compromises exploit known vulnerabilities in outdated software that have been patched for months or years.
Signs include: unexplained slowness, new admin users you didn't create, unfamiliar files in directories, search results showing pages you didn't publish, visitors being redirected to other sites, or malware warnings from Google or browsers.
Yes. Security plugins provide firewalls, malware scanning, login protection, and monitoring. Wordfence and Sucuri are the leading options. They catch attacks before they reach your WordPress installation.
Sources
Is your WordPress site following this checklist?
Webnixon secures WordPress websites through audits, hardening, security configuration, and ongoing monitoring. If your WordPress site needs a security audit or remediation, let's start with a consultation.
Book a WordPress security assessmentAbout the author
Marcus Lee
Senior Ecommerce Developer
Marcus leads ecommerce development at Webnixon, with deep expertise in Shopify Plus and Adobe Commerce (Magento). He has shipped 40+ scalable ecommerce builds for retailers and B2B manufacturers, leading complex technical integrations with payment gateways, ERP systems, and third-party fulfillment platforms. He writes about ecommerce architecture, platform selection, and the technical decisions that separate high-performing online stores from average ones.
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