To address security issues in third-party APIs integrated with your managed package, follow these steps:
1. **Submit Scan Reports**: Provide scan reports for all third-party integrations, including authentication credentials and API documentation if available.
2. **Secure Sensitive Data**: Store sensitive information like API keys in protected custom settings, custom metadata types, or Named Credentials, ensuring they're not editable through the License Management Application (LMA).
3. **Validate API Calls**: Ensure API calls originate from a Salesforce org by using unique tokens stored in protected custom metadata or exposing a restricted REST API endpoint.
4. **Follow Secure Coding Practices**: Avoid vulnerable coding patterns and adhere to secure coding guidelines.
5. **Fix Vulnerabilities**: Address issues like insecure data storage, outdated software, or TLS/SSL configuration problems. Work with third-party providers to resolve vulnerabilities in their systems.
6. **Document False Positives**: If flagged issues aren't actual vulnerabilities, create a document explaining why they're false positives.
7. **Ensure Compliance**: For sensitive data like payment information, comply with standards such as PCI DSS and minimize stored data.
8. **Thorough Testing**: Use tools like Salesforce Code Analyzer and Source Code Scanner to identify and fix security issues. Run additional scans for open-source libraries.
9. **Provide Documentation**: Include updated scan reports, false positive documentation, and any certifications or security reports from third-party providers in your security review submission.
10. **Engage with Salesforce Support**: Open cases for specific questions or attend technical office hours for guidance.
These steps help ensure your third-party API integrations meet Salesforce's security standards.