ACloud Access Security Broker (CASB)ensuresvisibility, compliance, and securityof cloud applications, andmonitoring data movementis the key to detecting threats.

Option A (Correct):Monitoring data movementallows organizations todetect and preventunauthorized access, data exfiltration, and cloud-based threats.

Option B (Incorrect):Along-term contractdoes not inherentlyimprove security monitoring.

Option C (Incorrect):Reviewing policies helps withgovernance, but it does notactively detect threats.

Option D (Incorrect):Firewallsprotectnetwork perimeters, while CASBs focus oncloud security, making this anineffective measurefor CASB threat detection.