To validate security approaches for new features before implementation, follow these steps:
1. **Comprehensive Testing**: Test your solution using both manual and automated security scanning tools. Include all external endpoints, even those not hosted on Salesforce.
2. **Follow-the-Data Approach**: Identify and test all components where customer data is transferred or authenticated, including external endpoints.
3. **Automated Scans**: Use tools like Salesforce Code Analyzer throughout development to catch vulnerabilities early. Address flagged issues promptly.
4. **Manual Testing**: Identify vulnerabilities that automated tools might miss, focusing on solution architecture, endpoints, and data transfer mechanisms.
5. **Secure Coding Practices**: Follow Salesforce security guidelines, such as using protected custom metadata for sensitive information and implementing CRUD/FLS checks.
6. **External Endpoints**: Obtain permissions for security testing and follow Salesforce's IP and domain guidelines.
7. **Consult Experts**: Engage with the Salesforce Security Team or schedule technical office hours for guidance on specific security concerns.
8. **Documentation**: Record findings, address vulnerabilities, and document false positives before submitting for a security review.