What results may be expected in the event that an adversary uses a MAC to alter a communication's Tag (MAC) and ciphertext while it is still in transit? Explain why the receiver will never be able to miss a changed tag or ciphertext and why this attack will not succeed.

Compare cipher block chaining with cipher feedback mode in terms of the number of encryption operations needed to transmit a large file. Which one is more efficient and by how much?

Is it possible to alter the Tag (the MAC) and the ciphertext while they are in transit using a MAC (message authentication code)? The receiver can always identify a changed Tag/ciphertext in this attack, therefore explain why it will not succeed.

Can an attacker using a MAC modify the Tag (the MAC) and the encrypted data? This attack is hopeless since the recipient can always identify whether the Tag/ciphertext has been tampered with.

What happens when a MAC (message authentication code) is utilised and an attacker tries to tamper with the Tag (the MAC) and the ciphertext while it is in transit? Explain why this attack can never succeed since the target's ability to identify a modified Tag/ciphertext ensures success.

Can an attacker using a MAC modify the Tag (the MAC) and the encrypted data? This attack is hopeless since the recipient can always identify whether the Tag/ciphertext has been tampered with.

What happens if a potential attacker tries to alter the Tag (the MAC) and the ciphertext while they are in transit, using a MAC (message authentication code)? Please elaborate on why this attack is pointless given that the receiver will detect a modified Tag/ciphertext.

When a MAC (message authentication code) is used, what happens if an attacker attempts to tamper with the Tag (the MAC) and the ciphertext while in transit? Provide an explanation for why this attack can never succeed since the target's ability to detect a tampered Tag/ciphertext guarantees success.

Hackers may attempt to break into a network by switching the source VLAN of the attack traffic with one of the target VLANs. This is done in order to get access to the network. The only way for the offender to be identified is if the normal actions connected with an attack are recognized and investigated. You need to be as specific as possible on the preventative steps that have been taken.

What happens if an attacker uses a MAC to modify a communication's Tag (MAC) and ciphertext while it is in transit? Explain why the recipient will always detect a modified Tag or ciphertext and why this attack fails.