Which of the following services would be BEST for the security officer to recommend to the company?

An information security officer reviews a report and notices a steady increase in outbound network traffic over the past ten months. There is no clear explanation for the increase. The security officer interviews several business units and discovers an unsanctioned cloud storage provider was used to share marketing materials with potential customers .

Which of the following services would be BEST for the security officer to recommend to the company?
A . NIDS
B . HIPS
C . CASB
D . SFTP

Answer: C