Which protocol is commonly used to protect data in motion across networks, such as cloud-synchronized data?

IPSec (Internet Protocol Security) is commonly utilized to protect data in motion across networks, including cloud-synchronized data. This protocol operates at the network layer and provides security by authenticating and encrypting each IP packet in a communication session. As data travels through untrusted networks, such as the internet, IPSec creates a secure tunnel that ensures confidentiality, integrity, and authenticity of the data being transmitted.

By employing protocols like IPSec, organizations can safeguard sensitive information from interception and tampering, making it particularly well-suited for scenarios such as connecting remote users to corporate networks or securing data exchanged between cloud services.

Other options like AES are encryption standards that can encrypt data at rest or in transit, but they do not function as a protocol to establish secure connections. BitLocker is a full-disk encryption feature primarily used to protect data on local storage rather than transmission. Software Guard Extensions (SGX) is a hardware-based security feature that protects data in use rather than securing data as it moves across networks.