Reference no: EM133122530 , Length: word count:2000

Information Security Management

Learning Outcome 1: Select and use applicable standards and methods for information security and risk management.

Learning Outcome 2: Conduct and properly document risk assessment based on a given scenario.

Learning Outcome 3: Find and evaluate appropriate published information to remain up-to-date about threats, vulnerabilities and patches.

Assessment Scenario

A conveyancing & estate service in the UK, CONVXYZ, hired your team to set up their IT network/system. The company provides (i) real estate services for property vendors and buyers and (ii) conveyancing services by their employed lawyers. The goal of the security system is to prevent or minimize the business loss caused by possible incidents, such as malfunction, information stealing, data modification, deletion or destruction, etc., including the recent dangerous conveyancing scams that has several victims recently.

Your colleagues in the team have proposed the first version of the security network architecture depicted in Figure 1. As a person responsible for risk assessment in your team, your task is to conduct a risk assessment on this system.

In Figure 1 the internal network of CONVXYZ is denoted by the dashed box, and all the assets in this dashed box are located in the company premise in the UK.

In Figure 1 the internal network of CONVXYZ is denoted by the dashed box.

• The company has a website (by the web server) where the customers can browse the properties and contact the estate agents. After registering to their conveyancing service, the customers get an account (username and password) to the website with which they can login and keep track of their property selling/buying transaction e.g., download documents for signing, upload their documents.
• The authentication server is responsible for authenticating the credentials (usernames and passwords) of both the customers and staff (lawyers and estate agents). When performing an authentication task, the authentication server communicates with the customer and staff database which stores information about the customers and staff. After a successful authentication, the customers and staff will be able to access to their property selling/buying documentations and current transaction/status.
• Company employees, such as lawyers and estate agents can use their computers to login the company website or browsing the internet.
• Before property exchange between the vendor and buyer, the buyer is requested to transfer the money to the bank account of CONVXYZ.

The bank account details is sent to the customer via email or by post.
• The mail server enables staff to send and receive emails from the customers and other member of staff.
• Individual visitors/customers can browse the website of CONVXYZ and register/login with their PCs via Internet.
• Lawyers are allowed to work remotely via a VPN (Virtual Private Network) tunnel.
• The PCs and servers are connected to 2 network switches and a router.
• The internal network is protected by a firewall.

Assessment Brief

In this assignment you have to:
• Conduct a risk assessment on the network in Figure 1, based on the ISO 27005 standard.
• Write a detailed risk assessment report

Flexibility of the Software/Hardware/Firmware Parameters
As you can see, there are no specific hardware and software details given in Figure 1. To avoid working in the entirely same network (and hence copying from each other), before doing the risk assessment, you have to specify the system parameters and the system boundaries, including the used operating systems, hardware, software/applications and firmware. Ideally, each of you will work with different sets of system parameters/scope that you chose or specified.

REPORT STRUCTURE

To meet the requirements your report must have a professional look. In order to help you in this regard the following structure is provided as a guideline. The report must contain the following main sections, however, you are allowed to add subsections as you find reasonable.

Introduction
Here you will specify the risk assessment method that you use, discuss the advantages of this risk assessment method. Finally, highlight the certain tasks that you will perform during the risk assessment on the given system.

Risk Assessment
• This section contains the main part (result) of the report, namely, the whole risk assessment process made on the system in Figure 1, besides your chosen system parameters. The section can include several sub-sections:
• Owner specification,
• Assets (primary and secondary). You should explain briefly why the assets are primary or secondary. You can give a collective explanation for a group of assets instead of explaining for each asset.
• One threat for each asset.
• One vulnerability for each asset. The vulnerabilities have to be taken from one of the online vulnerability databases (e.g. NVD), and have to be given with the official CVE- number.
• Likelihood level computation, using Boston gird
• Impact table specification
• Risk identification with the risk level, using risk matrix (Boston grid).
o At most 10 risks should be given.

Attachment:- Information Security Management.rar