代做BISM3205 Business Information Security: Assignment 1 – Semester 2, 2024代做数据库编程

日期：2024-08-27 04:13

Business Information Security

Assignment 1 worth 40% of overall course marks

2024 S2

Assignment overview

This assignment must be completed individually by each student. This assignment requires a student to answer 4 questions (each with sub-parts) that focus on the course material covered across the first four weeks of the course. Assignment 1 is worth 40% of the overall course marks and will be marked as per the rubric in Table 1. A student’s answer to each of the 4 questions (that is, each question and all  its sub-parts)  must  not  exceed 300 words  (+10% tolerance  per  UQ  policy). This word  limit  per question requires a student to soundly analyse/research each question and then structure a response in a concise, business informative fashion. There is no need to reference an answer unless referencing is specifically requested in the question. A student must construct each answer in her/his own words and in ‘plain English’ business language. Please note that each question in this assignment may well span work covered across all weeks (and not simply relate to one specific week).

This assignment assumes that a student is capable to assimilate information from not only this course, but also many other courses and reputable sources on the Internet as would be required in a business setting. Students are advised that the use of AI technologies to develop responses is strictly prohibited and may constitute student misconduct under the student code of conduct. Each assessment question evaluates students’ abilities,skills and knowledge without the aid of AI.

Submission and formatting instructions

•    Create and upload a single PDF document containing all answers to Turnitin on Blackboard.

•     Use the file naming convention described in the submission link when it becomes available   closer to the submission deadline (you may receive a deduction for incorrectly named files).

•     Please ensure your student details (name & student number) are contained on each page of the submission in a suitably designed footer.

•    Clearly label which question and if relevant sub-question you answer (e.g., Question 2a). You don't have to repeat the question.

•    Answer in full sentences but you may want to use bullet points, numbering, or headers to help structuring your answer.

•    Read each question carefully for additional formatting requirements specific to the question.

Question 1

Encipher/decipher with the WW2 Enigma machine.

The Enigma was used by the German military, among others, around the WW2 era as a portable cipher machine to protect sensitive military, diplomatic and commercial communications. The Enigma machine was considered so secure that it was used to encipher the most top-secret messages.

You can look at this video of someone using an Enigma to encode a message and then decode the same message again back to cleartext:

https://upload.wikimedia.org/wikipedia/commons/f/f7/Encrypting_and_decrypting_using_an_enig ma_machine.webm

a) The following message

LPRHOCFPJXFEKKLFDNBISSBIFEYHHMVZGPSPVTXOQTWYYQCYGVHIBPUDTTH was sent from an Enigma 1 machine with 3 rotors and the following settings:

Walzenlage (rotors): 1-5-8

Grundstellung links (left hand rotor): A Grundstellung mitte (middle rotor): L

Grundstellungrechts (right hand rotor): X Umkehrwalze (reflector): B

Ringstellung links (left hand rotor ring): P

Ringstellung mitte (middle rotor ring): U

Ringstellungrechts (right hand rotor ring): D Steckerbrett (plugboard): ME NZ KY

What does the message say?    (4%)

b) What type of cypher is utilised by the Enigma?   (2%)

c) Change the following settings on your Enigma machine leaving the remaining settings the same:

Walzenlage (rotors): 1-2-3

Umkehrwalze (reflector): C

and insert the answer you received in question 1a), what secret message cypher will your Enigma produce now?  (4%)

Question 2

The video "Phishing Attacks" (https://youtu.be/u9dBGWVwMMAalso on Blackboard under

“Assessment”) demonstrates how easy it is even for non-IT trained people to create a convincing phishing attack. NB: A computer with a Unix-like operating system can be purchased for AU$67    (Raspberry Pi 4 Model B 1GB).

a)    Describe what a phishing attack is and when it was first used for what purpose.

b)   What is spear phishing?

c)    What is clone phishing?

d)   What is whaling?

e)   What is vishing?

f)    What is Pharming?   (3%)

g)   The URLhttps://www.аррӏе.com/does not lead you to the place you would expect it togo. Click on it using different browsers including Firefox, look at the URL that is displayed each   time. What is this kind of attack called and how does it work?   (1%)

h)    How can you prevent organisational staff to fall for phishing scams? Name four different methods.   (4%)

i)     How many "1's" can Isend on a 10Mbps digital communication linkin one second under ideal conditions (no latency, jitter or packet loss)?   (1%)

j)     Is it better to use SHA256 rather than MD5 to hash your valuable data before backing it up just in case, so that people can't read it if they get hold of your backup somehow?   (1%)

Question 3

The article by Arthur Kopsias APM discusses the Telecommunications and Other Legislation

Amendment (Assistance and Access) Act 2018 (TOLA Act), which became law on 8 December 2018. This law aims to address the challenge of going dark, where law enforcement agencies face

difficulties accessing encrypted data used by terrorists and criminals.

Purpose: The Act enables law enforcement and security agencies to access encrypted communications by creating a new industry framework.

Framework: It introduces three types of notices for requesting assistance from communication providers.

Scope: Applies to both Australian and offshore communication providers, including major tech companies and equipment manufacturers.

Powers and Oversight: Agencies must have existing legal authority, such as a warrant, to use these powers.

Background:

Alex, an Australian resident, is suspected of being involved in an organized cybercrime group that uses encrypted messaging apps to coordinate illegal activities, including hacking into financial institutions and conducting large-scale fraud. The Australian Federal Police (AFP) has been investigating the group for several months but has encountered difficulties accessing the encrypted communications between members.

Scenario:

To advance their investigation, the AFP decides to use the powers granted by the Telecommunications and Other Legislation Amendment (Assistance and Access) Act 2018 (TOLA Act). They plan to approach SecureChat,a popular encrypted messaging app used by the suspects, to gain  access to their communications.

Task:

You are part of the legal team advising the AFP on how to proceed under the TOLA Act. Your task is to analyse the situation and provide a detailed plan, ensuring compliance with the Act while addressing potential legal and ethical issues.

Questions (make sure you stay within the 300+10% word limit):

1.    Identify the Appropriate Notices:

o  Which specific notices should the AFP consider issuing to SecureChat? Provide reasons for your choices.

2.    Legal and Procedural Requirements:

o  Outline the legal and procedural steps the AFP must follow to issue these notices. Include any necessary approvals, oversight mechanisms, and consultation requirements.

o  Discuss how the AFP can ensure that their requests do not require SecureChat to create systemic weaknesses or vulnerabilities in their encryption.

3.    Impact on Stakeholders:

o  Analyze the potential impact of these notices on SecureChat, its users, and broader societal implications. Consider privacy concerns, public trust in encryption, and the balance between security and privacy.

Guidelines for Answer:

•     Identify the Appropriate Notices:

o  Clearly identify which notices are most appropriate for the AFP to issue.

o  Provide a rationale for each notice, explaining how it aligns with the Act's provisions and the investigation’s needs.

•     Legal and Procedural Requirements:

o  Detail the procedural steps and legal requirements for issuing the notices.

o  Explain how to comply with safeguards against creating systemic weaknesses.

•     Impact on Stakeholders:

o  Discuss the implications for SecureChat and its users, considering both positive and negative outcomes.

o  Reflect on the broader societal impact and the balance between national security and privacy rights.   (10%)

Question 4

You area business analyst participating in the risk assessment process for your business. You have completed many different coursesat UQ and are therefore familiar not only with how to do this but you are also an expert insetting up spreadsheets. Senior management has devised a Weighted Factor Analysis policy for the valuations of all assets within the risk assessment process and your business uses a combination of quantitative and qualitative risk data points to  describe  impact. All relevant data is contained in a spreadsheet already that your predecessor Alex has created (this spreadsheet is available to you on Blackboard). However, you have found out the reason for Alex not working in your company anymore is because he made too many errors in his spreadsheet formulas.

As part of an overall risk assessment process, you are asked to assess the risk in relation to two information assets using a version of this spreadsheet corrected by you.

The assets under investigation are:

(1)  An Oracle SQL database containing product information. You have assessed that the database has a high impact on revenues earned by your business, and a moderate business impact on the public image of your business. The most likely attack against this database is insider abuse, and this is estimated to be 10% probable. The current controls  in  place to counter this attack are estimated to be 70% effective. You are 80% certain of your assumptions and data.

(2)  A UNIX transaction server for the business organisation is hosted in-house and those transactions have very high impact on revenue, and a high impact on the public image of your business. The server can be  attacked using malware with a likelihood of a single attack estimated to be 0.2.  A control has been implemented that reduces the impact of any vulnerability by 50%. You are 90% certain of your assumptions and data.

You are now required to do the following:

Calculate the asset valuations and the relative risk for each of the two assets using the

formula (3) from the seminar (Risk = likelihood * asset_value ‐ controlled risk + uncertain risk) using a corrected version of the spreadsheet made available to you. Highlight the risk of the asset you would recommend for further security in red.

You must insert a screenshot of your final spreadsheet created from the template given to you into your document in landscape mode as a picture. All intermediate and final values  must be clearly visible (range A1:P15). Do not show any formulas or you may lose marks. Do NOT submit your spreadsheet, it will be discarded!   (10%)