Email security is two-fold: the confidentiality of thecommunication and the authentication of sender or the sender’sdomain. The latter prevents phishing attacks. Encryption is neededfor message confidentiality. Consider the following threat models.Describe what security features Alice (the sender) needs to have inorder to achieve end-to-end email message confidentiality, i.e.,only the intended receiver Bob can read the message. Note: You needto describe what it takes to achieve email confidentiality, notnames of existing tools.
1. The attacker monitors the network traffic and nothingelse.
2. The attacker knows the password of Bob’s email account.
Answer