Which of the following would be MOST effective in preventing malware from being launched through an email attachment?
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A. B. C. D.C.
The most effective measure for preventing malware from being launched through an email attachment is C. Security awareness training.
Explanation:
Email attachments are one of the most common ways through which malware is spread. Malware can be hidden in attachments, and when an unsuspecting user clicks on the attachment, the malware is launched, causing harm to the system.
While all the options listed can help prevent malware from being launched through an email attachment, security awareness training is the most effective. This is because security awareness training educates users on how to identify and avoid phishing emails and suspicious attachments. With security awareness training, users learn to be cautious of attachments from unknown sources, or those with suspicious file names or extensions.
Up-to-date security policies are important, but they cannot guarantee that all users will adhere to them. Placing the email server on a screened subnet and using a network intrusion detection system (NIDS) can help prevent malware from entering the network, but they cannot guarantee that malware will not be launched through an email attachment.
In summary, security awareness training is the most effective measure for preventing malware from being launched through an email attachment because it empowers users to be vigilant and cautious when handling email attachments.