Cryptographic protocols are essential frameworks that ensure secure communication over networks. They utilize various cryptographic techniques to protect data integrity, confidentiality, and authenticity. Examples include SSL/TLS for secure web browsing and PGP for email encryption. These protocols establish rules for how data is encrypted and transmitted, making it difficult for unauthorized parties to access sensitive information. By implementing cryptographic protocols, organizations can safeguard their communications against eavesdropping and tampering, thereby enhancing overall security in digital interactions.