Explanation
A CASB (Cloud Access Security Broker) and encryption are two solutions that can address the CSO's concerns about cloud-based services security. A CASB is a software tool or service that acts as an intermediary between users and cloud service providers, enforcing security policies and providing visibility and control over cloud activities. A CASB can help detect and prevent advanced threats and malware by applying data loss prevention, threat protection, anomaly detection, and encryption capabilities to cloud data and traffic456 Encryption is a process of transforming data into an unreadable format using a secret key or algorithm, making it inaccessible to unauthorized parties. Encryption can help protect cloud data from breaches by ensuring that only authorized users with the correct key can decrypt and access the data. Encryption can be applied to data at rest (stored in the cloud) or data in transit (moving between the cloud and users)789 References: CompTIA Security+ SY0-601 Certification Study Guide, Chapter 8:
Implementing Secure Protocols, page 360; What is a Cloud Access Security Broker (CASB)? | McAfee; Cloud Access Security Brokers (CASBs) - Gartner IT Glossary; What is Cloud Access Security Broker (CASB)? - Definition from WhatIs.com; What is Encryption? | Malwarebytes; Encryption - Wikipedia; What is Encryption? How Does Encryption Work? | Kaspersky