Which of the following is the BEST choice for a security control that represents a preventive and corrective logical control at the same time?
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A. B. C. D.B.
Among the given options, the security control that represents a preventive and corrective logical control at the same time is a Firewall (option C).
A firewall is a network security device that monitors and controls incoming and outgoing network traffic based on predetermined security rules. It can prevent unauthorized access to or from a private network and can be configured to allow or deny specific traffic based on a set of predefined rules.
A firewall acts as a preventive control by preventing unauthorized access to the network and keeping out potential threats. It can also be configured to block certain types of traffic, such as specific IP addresses, protocols, or ports, which can prevent attacks and limit the impact of security incidents.
At the same time, a firewall also acts as a corrective control. If an attacker is able to bypass the preventive controls and gain unauthorized access to the network, a firewall can detect and block the attacker's activity, limiting the extent of the damage and potentially alerting security personnel.
Security awareness training (option A) is an important security control, but it is not a logical control. Instead, it is considered a human control since it focuses on educating and training employees on security best practices and potential threats.
Antivirus (option B) is a preventive control that helps detect and remove malware from systems. However, it is not considered a corrective control since it cannot remediate an infected system or reverse the damage caused by malware.
Intrusion detection systems (option D) are considered detective controls since they detect potential security incidents or violations. They can be used as a corrective control if they are configured to trigger an alert or block traffic based on predetermined rules. However, they are not considered a preventive control since they do not proactively block access to the network.
In summary, a firewall is the best choice for a security control that represents a preventive and corrective logical control at the same time among the given options.