You manage a Windows computer that is shared by multiple users.

Recently, a user downloaded and installed two malware programs on the computer. The applications had a $.$msi extension.

What is the first line of defense in protecting your system against applications like these from being copied or downloaded to your system?

answer

Train users to use caution when downloading software or responding to emails.

Use anti$-$malware software that provides real$-$time protection.

Implement spam filters and real$-$time blacklists.

Install anti$-$malware scanning software on email servers.