Best practices for encrypting sensitive data in transit and at rest involve a multi-layered approach:

For Data in Transit:
1. Use TLS/SSL: Implement the latest version of Transport Layer Security (TLS) for all network communications.
2. Perfect Forward Secrecy (PFS): Employ PFS to ensure that session keys are not compromised if long-term secrets are exposed.
3. Strong Cipher Suites: Use robust encryption algorithms like AES-256 for data encryption.
4. Certificate Management: Regularly update and validate SSL/TLS certificates.
5. VPNs: Utilize Virtual Private Networks for remote access to sensitive systems.

For Data at Rest:
1. Full Disk Encryption: Implement full disk encryption on all devices storing sensitive data.
2. Database Encryption: Use transparent data encryption (TDE) for database systems.
3. File-level Encryption: Employ file-level encryption for sensitive documents.
4. Key Management: Implement a robust key management system to securely store and rotate encryption keys.
5. Hardware Security Modules (HSMs): Use HSMs for storing cryptographic keys.

General Best Practices:
• Regular Security Audits: Conduct periodic security assessments and penetration testing.
• Data Classification: Classify data based on sensitivity to apply appropriate encryption levels.
• Access Controls: Implement strong access controls and multi-factor authentication.
• Encryption Policy: Develop and enforce a comprehensive encryption policy.
• Stay Updated: Keep all systems and encryption protocols up-to-date with the latest security patches.

By implementing these practices, organizations can significantly enhance the security of their sensitive data, protecting it from unauthorized access and potential breaches.