Context and safety notes
This guide is aimed at merchants and technical administrators running PrestaShop 1.7 to 9. Behavior and file names may differ by version — always test changes in a staging environment before applying them in production.
Back office URL and access control
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Rename the default /adminXXXX folder or change the admin URL when possible. Test autoloaders and module references first.
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Restrict access by IP using the server firewall or a WAF. Use a VPN for remote teams.
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Enforce HTTPS and HSTS; set admin cookies to Secure and HttpOnly.
Employee accounts and least privilege
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Apply least privilege: create role-specific profiles (catalog, orders, support) and avoid using super-admin accounts for routine tasks.
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Disable or remove inactive accounts and rotate passwords when someone leaves.
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Enforce strong password policies and sensible rotation intervals.
Two-factor authentication (2FA)
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Enable 2FA for all administrative accounts. Prefer TOTP apps (Google Authenticator, Authy) or FIDO2 hardware keys where available.
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Document account recovery procedures and store recovery codes in a secure vault.
Updates and patching
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Keep PrestaShop, the theme, PHP, MySQL and server components up to date — patches often fix security flaws.
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Test updates in staging and automate backups before production deployments.
Module selection, auditing and removal
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Only install modules from trusted sources: PrestaShop Addons, reputable developers or controlled repositories.
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Audit modules: review code, required permissions, used hooks, and files created at install time.
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Remove modules safely: disable first, export data, delete files, and inspect the database for residual tables/fields.
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Replace or quarantine unsupported or abandoned modules.
Backups and recovery plan
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Automate regular backups of files and database. Store copies offsite and periodically test restores.
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Keep multiple restore points (daily, weekly, monthly) depending on store activity.
Logs and anomaly detection
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Enable and centralize logs (web server, PHP, PrestaShop where available). Protect and archive logs.
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Monitor admin logins, module changes, file uploads and server-side file changes.
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Create alerts for suspicious activity: repeated login failures, unexpected file changes or mass account creation.
File integrity monitoring
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Use integrity tools (hashes/checksums) for critical files: controllers, classes, overrides and templates.
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If a file is altered without approval, put the site into maintenance, restore from backup, and investigate.
Maintenance plan and responsibilities
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Document a maintenance plan covering updates, testing, backups, key rotation, module audits and access reviews.
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Assign clear roles: Dev, Ops, Support, and an escalation path to external experts when needed.
Practical checklist
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Change admin URL and limit IP access
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Enforce HTTPS and HSTS
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Enable 2FA for admin accounts
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Apply least privilege for employees
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Keep PrestaShop and PHP updated
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Audit and remove risky modules
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Automate backups and test restores
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Centralize and monitor logs
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Monitor file integrity
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Maintain a documented maintenance plan
Conclusion
Protecting a PrestaShop store is about layered, consistent practices: access control, cautious module management, disciplined backups and active monitoring. When in doubt or after an incident, involve specialised professionals. Securantis can help as part of a broader defensive strategy, but no single product guarantees absolute security.