The answersDownload the PDF
Worksheet

F11.1 Why cyber security

Cyber security · GCSE · OCR J277 1.4.1, AQA 8525 3.6.1, Edexcel 1CP2 5.3.1 · about 15 min

BugBotLab
NameClassDate

What this lesson is about

Confidentiality, integrity and availability, who attacks and why, and ranking risk.

Questions 5 marks in all

  1. [1 mark]What does confidentiality mean in security?

    1. AOnly the right people can read the data
    2. BThe data is always available
    3. CThe data is never changed
    4. DThe data is backed up

  2. [1 mark]Flooding a website until it crashes attacks which goal?

    1. AAvailability
    2. BConfidentiality
    3. CIntegrity
    4. DAuthenticity

  3. [1 mark]What is often the weakest link in security?

    1. APeople
    2. BFirewalls
    3. CEncryption
    4. DCables

  4. [1 mark]Why might an insider be a threat?

    1. AThey already have access they can misuse
    2. BThey cannot log in
    3. CThey have no motive
    4. DThey work from home

  5. [1 mark]A risk has likelihood 4 and impact 5. What is its risk score, if score is likelihood times impact?

The task: rank the risks

Give each risk in risks a score of likelihood times impact. Print each as <name>: <score>, sorted from the highest score to the lowest. Then print biggest risk: <name> for the one at the top.

# the two lines every program starts with: the commands, then the robot
from bugbot import *
connect()

# name, likelihood (1 to 5), impact (1 to 5)
risks = [("weak passwords", 4, 5), ("stolen laptop", 2, 4), ("phishing email", 5, 4), ("power cut", 3, 2), ("out-of-date software", 4, 3)]

Plan your program here, then type it in and press Run.

QR code
Do it on the robot
www.bugbotlab.com/learn/f11-1-why-cyber-security/
The simulator checks it and tells you when it passes. Nothing to install, no account.

Challenges

  1. Add a risk of your own and see where it ranks.
  2. For each risk, say which of confidentiality, integrity and availability it threatens.
  3. Which two risks would you spend money on first, and why?