Developing a Network Threat Model Questions

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Scenario: You work for a PR and marketing company that handles highly sensitive information for its high-profile clients. Client records are stored in a database and file system hosted on your private corporate network. As well as client records, this includes media such as photos and videos. Most remote client communications and data transfers take place using a one-to-one encrypted messaging app, but your organization also accommodates some clients who prefer to use email. A high percentage of staff work remotely, accessing data and services over a VPN. You are reviewing your security procedures in light of some recent high-profile hacks of celebrity data. At this point, you want to understand the attack surface and attack vectors by which your private network could be compromised.

Research the question below and write your answers in a paper.

1. What remote access methods could an attacker exploit?

2. Focusing on email, think of how email is processed as it is sent by a remote user and received by your company. What are the attack vectors against the company’s email servers? How can these be related to adversary capability, assuming the levels range from advanced (most capable), to developed (moderately capable), to augmented (least capable)?

3. What are the steps in the chain of processing incoming email, and what attack vectors can adversaries exploit?

4.What countermeasures can be deployed for each email attack vector?