Integrating the HitchHiker API into a corporate travel platform requires implementing several security protocols:

1. Authentication: Use strong authentication mechanisms such as OAuth 2.0 to ensure that only authorized users can access the API.

2. Encryption: Implement SSL/TLS encryption to secure data transmission between the API and the corporate platform.

3. API Key Management: Securely manage API keys and tokens, and use them to control access to the API.

4. Access Controls: Define and enforce access controls based on user roles and permissions to limit access to sensitive data.

5. Data Privacy: Ensure compliance with data privacy regulations (e.g., GDPR) and protect personal data.

6. Regular Audits: Conduct regular security audits and vulnerability assessments to identify and address potential security issues.

7. Logging and Monitoring: Implement logging and monitoring to detect and respond to security incidents in real-time.

For more information, visit HitchHiker API.

In summary, required security protocols include authentication, encryption, API key management, access controls, data privacy, regular audits, and logging/monitoring.