What "layer" of an e-mail message should you consider when evaluating e-mail security?

Related MCQs

• This is is the hiding of a secret message within an ordinary message and the extraction of it at its destination.
• This is the name for a group of programmers who are hired to expose errors or security holes in new software or to find out why a computer network's security is being broken.
• This is the inclusion of a secret message in otherwise unencrypted text or images.
• This is the forging of an e-mail header so that the message appears to have originated from someone or somewhere other than the actual source.
• This is an assault on the integrity of a security system in which the attacker substitutes a section of cipher text (encrypted text) with a different section that looks like (but is not the same as) the one removed.
• This type of intrusion relies on the intruder's ability to trick people into breaking normal security procedures.
• This is a type of network security attack in which the intruder takes control of a communication between two entities and masquerades as one of them.