Security Best Practices for Shopify Apps
Merchant trust is built on security. I implemented a multi-layered defense strategy to protect our database and merchant access tokens.
- Token Encryption: I use Laravel's
Cryptfacade (AES-256-CBC) to ensure access tokens are never stored as plain text in the database. - Content Security Policy: I configured strict CSP headers to prevent XSS attacks within the Shopify Admin iFrame.
- Input Sanitization: All GraphQL mutations are validated against strict DTOs (Data Transfer Objects) to prevent injection.