Security Best Practices Apply these security principles when developing backend services, microservices, and any code handling sensitive data or external inputs. Input Validation and Sanitization - Apply input validation and sanitization rigorously, especially on inputs from external sources - Validate all user inputs at the boundary of your application - Use allowlists over denylists when validating input - Sanitize data before storing or displaying to prevent injection attacks - Implement strict type checking and schema validation Authentication and Authorization - Use secure defaults for J…