Most UK business owners know their WordPress site should be ‘secure,’ but few know how to verify that it actually is. This practical security audit checklist gives you a structured way to assess your site’s defences — no technical expertise required. If your site handles customer enquiries, processes payments, or stores personal data, you have both a business and legal obligation under UK GDPR to ensure it’s protected.
Access and authentication: Do you know every user with admin access? Are all admin passwords unique and complex? Is 2FA enabled for all admin accounts? Is the login URL protected or rate-limited? Software: Is WordPress core running the latest version? Are all plugins updated? Have inactive themes been deleted? Is PHP 8.3 or higher running?
Hosting and infrastructure: Is HTTPS active and properly configured? Is your site isolated from other hosted sites? Does your host offer DDoS mitigation? Is there a web application firewall protecting your site? Are automated backups running daily?
Data protection under GDPR: Is form data transmitted over HTTPS and stored securely? Is personal data encrypted at rest? Are payments processed through PCI-compliant third parties? Do you have a data retention policy? Monitoring: Will you know immediately if your site goes down? Is malware scanning running regularly?
Prioritise gaps by risk
Critical: no SSL, outdated WordPress core, default admin credentials. High: no 2FA, outdated plugins, no backup strategy. Medium: no WAF, no uptime monitoring. Many of these issues are resolved automatically with hosting designed for security. Review our uptime SLA and GDPR data protection commitments, and compare managed vs shared hosting to understand the security difference.
Frequently Asked Questions
What should a WordPress security audit cover?
A comprehensive WordPress security audit covers: access and authentication (admin user list, password strength, 2FA status, login URL protection), software currency (WordPress core, all plugins, all themes, PHP version), hosting and infrastructure (HTTPS configuration, site isolation, WAF presence, DDoS mitigation, backup status), data protection under GDPR (personal data handling, encryption at rest and in transit, data retention policies), and monitoring (uptime alerts, malware scanning, security event logging). The audit produces a prioritised list of gaps with recommended remediation steps.
How often should I audit my WordPress site’s security?
Conduct a full security audit annually, and a partial checklist review quarterly. Trigger an immediate audit after: any suspected security incident, a major plugin or WordPress core update, adding new staff with admin access, changing your hosting provider, or significantly expanding your site’s data collection (adding a WooCommerce store, membership functionality, or form-based lead capture). Security posture degrades over time through plugin accumulation, permission creep, and configuration drift — regular auditing catches these before they are exploited.
What are the most critical WordPress security issues to fix first?
Prioritise by risk level: Critical (fix within 24 hours) — no SSL/HTTPS, WordPress core running a version with known vulnerabilities, default or weak admin credentials, admin account without 2FA. High (fix within 72 hours) — plugins with disclosed vulnerabilities not yet patched, no active backup solution, login URL unprotected, PHP running a version past end-of-life. Medium (fix within a week) — no WAF or malware scanning, uptime monitoring absent, excessive admin accounts. Addressing critical issues first eliminates the highest-probability attack vectors before tackling lower-risk gaps.
Do I need technical knowledge to audit WordPress security?
Basic security auditing does not require technical expertise. Checking plugin update status, verifying 2FA is enabled, confirming SSL is active and properly configured, and reviewing the admin user list are all accessible via the WordPress dashboard. For deeper assessment — database security, file permissions, server configuration, WAF effectiveness — you need either technical knowledge or a managed hosting provider who handles these layers. The checklist approach focuses on what site owners can verify themselves and flags what requires hosting-level investigation.
How does managed hosting reduce the WordPress security audit burden?
Managed hosting handles the infrastructure and server-level security items that make up a significant portion of the audit checklist: WAF included and maintained, malware scanning running continuously, SSL certificates automatically renewed, site isolation preventing cross-account contamination, automatic security patching with virtual patches for newly disclosed vulnerabilities, and off-site backups running on schedule. On managed hosting, the audit focuses on application-level items (user access, plugin hygiene, content security) rather than infrastructure configuration.