What is the role of encryption in web security?

Encryption plays a crucial role in web security by protecting sensitive information as it is transferred over networks. By converting data into a code, encryption ensures that only authorized users with the correct decryption key can access the information. This process is essential for safeguarding personal data, financial transactions, and any confidential communications from interception by unauthorized parties.

When data is encrypted, even if an attacker manages to intercept it, they will only capture scrambled information that is practically impossible to decipher without the appropriate decryption method. This layer of security is vital for maintaining privacy and integrity in online interactions, particularly as cyber threats continue to evolve.

The other options do not accurately depict the function of encryption. While data compression may improve transmission speeds, it does not protect the data itself. Enhancing user experience focuses more on user interface and usability, which is unrelated to encryption. Lastly, creating backup copies of data is about data retention and recovery, not its protection during transmission. Therefore, the role of encryption in web security is primarily to protect data from unauthorized access.