Which of the following technologies is used to ensure that secure API (Application Programming Interface) access?

The correct answer is message-level crypto-access, as it provides a robust means of ensuring secure API access. APIs often transfer sensitive data over the internet, and without proper security measures, they can be exposed to various threats, including data interception and unauthorized access.

Message-level cryptography, or message-level encryption, involves encrypting the actual message content, ensuring that only the intended recipient can decrypt and access the information. This method is particularly effective for APIs because it secures the data at the application layer, independent of the underlying communication channels. As a result, even if attackers manage to intercept the data transported between servers, they would not be able to read it without the appropriate decryption keys.

In contrast, other options do not specifically address secure API access in the same way. For instance, a virtual private network, while it can provide a secure channel for data transmission, does not implement encryption specifically at the API level and may not protect data once it is received by the API endpoint. Data loss prevention focuses on preventing the unauthorized transmission of sensitive information but does not directly ensure the secure transmission or access of data via APIs. Identity—Asset Management deals with identifying and managing identities and associated assets, but it does not specifically secure API data transmissions like message-level