A CASB, or Cloud Access Security Broker, is a software tool or service that acts as an intermediary between an organization's cloud services and its users. A CASB can provide various security functions, such as visibility, compliance, threat protection, and data security2 A CASB can help protect the company's data stored in the cloud by preventing certain types of data from being downloaded to a workstation, such as sensitive or confidential information. This can reduce the risk of data leakage, theft, or loss if a workstation is compromised or stolen.
Reference:
Cloud Access Security Broker (CASB): An enterprise management software designed to mediate access to cloud services by users across all types of devices