Which of the following statements about email security best describes email encryption?

AThis is a self-replicating program that can spread by email

BThis disguises the content of an email message in order to protect sensitive information ✓ Correct

CThis consists of sending numerous duplicate mails to the same email address

DThe email header is changed so that the message appears to have come from someone else

Correct answer: (B) This disguises the content of an email message in order to protect sensitive information

Explanation

Email encryption disguises a message's content to protect sensitive information.

It scrambles the text so only the intended recipient can read it.

A self-replicating program spread by email describes a worm, not encryption.

Sending many duplicate mails to one address describes mail bombing, not encryption.

Changing the header so mail seems from someone else describes spoofing.

Encryption uses keys to lock and unlock the readable message.

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