The best recommendation to prevent unauthorized access in this scenario is to implement multi-factor authentication (MFA). According to the ISACA CISA Study Manual, "MFA is a security technique that requires two or more independent credentials for user authentication. MFA can be used to provide additional security for cloud-based services and applications." Thus, implementing MFA would be an effective way to prevent unauthorized access and maintain a secure environment.
Multi-factor authentication (MFA) is a security measure that requires users to provide two or more pieces of evidence to verify their identity before accessing cloud-based applications and data123. MFA can prevent unauthorized access by making it harder for attackers to compromise user credentials or bypass password protection

Explanation/Reference:
Explanation:
The intruder determines the nature of the flow of traffic (traffic analysis) between defined hosts and is able to guess the type of communication taking place. Message modification involves the capturing of a message and making unauthorized changes or deletions, changing the sequence or delaying transmission of captured messages. Masquerading is an active attack in which the intruder presents an identity other than the original identity. Denial of service occurs when a computer connected to the lnternet is flooded with data and/or requests that must be processed.

Explanation
The most critical factor for the effective implementation of IT governance is a supportive corporate culture. A supportive corporate culture is one that fosters collaboration, communication and commitment among all stakeholders involved in IT governance processes. A supportive corporate culture also promotes a shared vision, values and goals for IT governance across the organization. Strong risk management practices, internal auditor commitment or documented policies are important elements for IT governance implementation, but they are not sufficient without a supportive corporate culture. References: ISACA, CISA Review Manual, 27th Edition, 2018, page 41