Common Drupal security best practices every website owner should know

Website security is important for any organisation building or managing Drupal websites that contain content, customer information, or online services. Drupal provides a solid security foundation out of the box, but no CMS is inherently secure without regular maintenance and updates. Website owners working with a Drupal agency in Melbourne should be aware of basic practices that can help reduce risk, protect sensitive data, and ensure their websites remain stable and secure over time.

Keep Drupal core updated

Drupal core updates include security fixes for vulnerabilities discovered since the last version. They may also include bug fixes and updates that improve the platform's overall stability and security. Waiting to apply Drupal updates leaves a website exposed to publicly disclosed vulnerabilities. Website owners should monitor notifications for available updates and apply critical patches immediately. Updating a live site can introduce compatibility issues, so updates should be tested before deploying to major versions, if possible.

Update modules and themes regularly

Drupal websites commonly use contributed modules and themes to add extra functionality. Modules and themes with known vulnerabilities can pose a serious security risk to any website. Website owners should review installed modules and themes periodically. They should delete modules that are no longer used and ensure that all installed modules continue to receive updates. Where possible, abandoned modules should be replaced. Website owners should consider using only well-supported modules from reputable sources to avoid unnecessary risk.

Use strong user access controls

Users who log in to Drupal do not need access to every piece of site information or functionality. Open permissions can lead to unintentional modifications or opportunistic breaches by unauthorised users. Drupal allows fine-grained permissions for different types of users. Website owners should take advantage of this to lock down areas of the website that provide administrative control or contain sensitive data. Each user should only be granted the permissions required to fulfil their role on the site. Site owners should also review users regularly so that former employees or contractors cannot retain access.

Create strong password policies

Weak passwords are a pervasive security risk on many websites. Simple passwords can be guessed or cracked through brute-force attacks, giving attackers access to admin and editor accounts. Website owners should enforce strong passwords and encourage users with elevated permissions to use multi-factor authentication. Website owners should also require administrators to use strong passwords. This can help prevent someone who obtains a staff member’s login credentials from easily accessing the site's backend.

Use HTTPS across the website

HTTPS encrypts data between websites and users’ browsers. It helps protect the integrity of any sensitive information that visitors may enter into the site. This includes login credentials, contact forms, personal data, or payment information.Website owners should install an SSL certificate and enable HTTPS on their entire domain. HTTP pages should automatically redirect to HTTPS pages. Enabling HTTPS is important for both user trust and website security.

Back up the website frequently

Bad things can happen to any website. Attacks, software conflicts, hardware failures, or simple human error can result in corrupted files or lost data. Backups allow website owners to restore content and databases if something goes wrong. Owners should store copies of website backups off server in a secure location. Backups shouldn’t just be set-and-forgotten. Owners should verify that backups can be restored successfully at least once a year. 

Secure the hosting environment

Website security doesn’t stop with Drupal. Website owners are also responsible for maintaining their overall hosting environment. Older versions of PHP, database software, and server software should be updated. File permissions should be reviewed and updated to ensure that sensitive files are not world-readable or world-writable. Many other configuration options can impact security, especially on multi-site installations. Website owners should work with their hosting or managed service providers to ensure Drupal runs on a secure foundation.

Monitor logs and suspicious activity

Drupal’s built-in logging features can help owners identify suspicious activity or examine how users interact with their site. System administrators can enable logging of login attempts, configuration changes, user updates, and other activities. Suspicious behaviour, such as multiple failed login attempts or changes to the website configuration, should be investigated. Reviewing logs over time can also highlight suspicious patterns that may indicate automated attacks. Drupal logs are most effective when combined with server-level logging provided by the host.

Remove unused components

Unused modules, themes, users, and old files can pose security risks to websites. Old versions of software can contain vulnerabilities even if they aren’t being actively used on the site.

Drupal website owners should review their installations and remove old or unused items. A cleaner installation is easier to maintain, update, and secure.

Test changes before deployment

Installing new modules, applying configuration changes, and custom coding can introduce vulnerabilities or break existing functionality on websites. Website owners and developers should use testing or staging environments before updating live websites. Rolling back problematic updates is much more difficult if they’ve already been pushed live.

Drupal websites benefit from strong security defaults, but there are still steps administrators should take to improve security. Routine maintenance, vigilance, and ongoing evaluation of systems can also help keep a website secure against threats.

Website owners with special considerations may benefit from custom website development services that plan and build websites with security in mind from the start, rather than applying security as an afterthought. Website security is not a set-it-and-forget-it deal. Security threats evolve along with software and businesses, and website owners should adapt their security processes as needed.