To ensure complete removal of sensitive data storage violations and references:
**For Field References:**
1. **Remove References in Code**: Eliminate all references to the sensitive data fields from Apex code, including any logic or operations involving these fields
2. **Check UI Elements**: Verify that the fields are not used in Visualforce pages, Lightning components, or other user interface elements
3. **Update Metadata**: Ensure the fields are not included in any metadata, such as custom objects or layouts
4. **Review Debug Logs**: Check debug logs to confirm that no sensitive data fields are logged or referenced
5. **Run Security Scans**: Perform a comprehensive scan of the codebase using security tools to identify any lingering references
6. **Document Changes**: Provide a detailed explanation in the false positive document, if applicable, to demonstrate compliance during the security review
**For Storage Violations:**
1. **Use Protected Storage**: Store sensitive data in protected custom metadata or protected custom settings. Avoid unprotected locations
2. **Encrypt Sensitive Data**: Use encryption mechanisms like named credentials, encrypted fields, or the Crypto API to encrypt sensitive data before storing it
3. **Avoid Logging Sensitive Data**: Do not log sensitive data, passwords, keys, or stack traces in production environments. Redact or omit such data from logs
4. **Perform Thorough Testing**: Conduct manual testing and use tools like Salesforce Code Analyzer and Source Code Scanner to identify and address violations
5. **Follow Secure Coding Standards**: Adhere to secure coding practices, such as avoiding insecure storage of sensitive data and following enterprise security guidelines
**For Managed Packages:**
1. **Encrypt Sensitive Fields**: Use encryption for sensitive fields and store the encryption key in a protected custom setting object
2. **Create Separate Encrypted Fields**: Instead of reusing existing fields, create new fields specifically for storing encrypted values
3. **Implement Triggers for Encryption**: Add triggers to encrypt sensitive data before insertion and decrypt it when needed
4. **Deprecate Unused Fields**: Deprecate sensitive fields that are no longer required
5. **Test and Validate**: Use security tools to identify and address vulnerabilities, then rescan after making changes
These steps will help mitigate risks and improve your chances of passing the security review.