Which statement best describes data in transit security?

• A. Encrypts data while it moves between endpoints.
• B. Relies solely on user passwords for protection.
• C. Stores data securely on a hard drive.
• D. Is achieved by keeping devices on a private network without encryption.

Answer: (A)

Protecting data in motion means keeping information confidential and intact as it travels across networks. Encrypting data while it moves between endpoints achieves this by turning readable information into ciphertext that only the intended recipient can decrypt. This is how web traffic remains private (TLS/HTTPS), how emails can be protected in transit, and how VPNs shield data across networks. Without encryption, anything on the network could potentially read or modify the data, which is why simply relying on passwords or keeping devices on a private network without encryption isn’t sufficient for data in transit. Data at rest, by contrast, refers to information stored on a device or server, not moving over a network. Even on private networks, encryption adds protection against exposure if the network is compromised.