Magento Security Checklist

This is a community sourced checklist of security measures to take before launching your store. Think of it as a pre-flight checklist so you don't forget something important because you've been in a headlong rush for the last few months to get all the features of your eCommerce site built.

This checklist will apply to only Magento 2.x versions.

Custom code

• Are all inputs validated on the server side? (Link to volidation tutorial)
• Are you sanitizing all inputs also? (eg: casting to integers if a number is expected?)
• Are you using Magento built in form_key validation on all custom forms? (Link for more info on CSRF Anti-forgery tokens)
• Are you properly escaping all output to screen using escapeHtml(), escapeJs() and similar functions?
• Are you setting HttpOnly and Secure flag on any custom cookies?
• Are you using the Magento\Config\Model\Config\Backend\Encrypted backend model for sensitive API data to be stored in the DB? eg: payment gateway keys.
• Are you using any dynamic code execution functions like eval, shell_exec? (Exploitable PHP functions)
• Are you building MySQL queries properly, and not using direct queries?
• Are all sensitive or system specific settings treated as sensitive configuration? (DevDocs on sensitive configuration)

Extension security checklist

• Do you have the latest version of all the extesions being used on the site?
• Are all you extensions using Magento ACL properly to limit the scope of users?
• Did you perform a security audit on 3rd party extensions used on the store? (Link to sample tools to help perform security audit on extensions)

Magento Admin settings

• Are you using a custom Magento Admin URL?
• Is access to your Admin URL IP whitelisted or protected via VPN?
• Confirm that Web -> Default Cookie Settings -> Use HTTP Only is not disabled?
• Are you using 2FA for your admin login? For example MageSpecialist TwoFactorAuth module
• Are there any old/unused admin users which were created for testing or development that should be removed?

Server settings

• Is your site logging information in a format that is easily reviewed by your team?
• Is your site logging any potentially sensitive information?
• Is everything running on HTTPS?
• Do you have notifications turned on for filesystem integrity?

Regular Maintenance

• Do you have an Incident Response Plan implemented and tested (mock scenario)? (Magento Incidence Response Plan template
• Do you have a person with regular scheduled time to review log messages for suspicious behaviour?
• Do you have a person with a subscription to security notices from Magento security blog for urgent patches/updates? (Link to security blog)

Web-Application

• Are there any (development) files or database dumps lying around in the document root that are not intended for public useage (for example info.php, phpinfo.php, dbdump.sql.gz)?

External security concerns