Which of the following would BEST meet the CSO’s objectives?

A Chief Security Office’s (CSO’s) key priorities are to improve preparation, response, and recovery practices to minimize system downtime and enhance organizational resilience to ransomware attacks .

Which of the following would BEST meet the CSO’s objectives?
A . Use email-filtering software and centralized account management, patch high-risk systems, and restrict administration privileges on fileshares.
B . Purchase cyber insurance from a reputable provider to reduce expenses during an incident.
C . Invest in end-user awareness training to change the long-term culture and behavior of staff and executives, reducing the organization’s susceptibility to phishing attacks.
D . Implement application whitelisting and centralized event-log management, and perform regular testing and validation of full backups.

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Answer: D