Defense in depth strategy in Cybersecurity - Mini Project: Build & Apply

Defense in Depth Strategy

📖 Scenario: You are working as a cybersecurity analyst for a small company. Your task is to understand and organize the layers of security that protect the company's network and data.Imagine the company wants to build a strong defense by using multiple security measures, one after another, so if one fails, others still protect the system. This approach is called Defense in Depth.

🎯 Goal: Build a simple list of security layers used in a defense in depth strategy. Then, add a variable to set the priority level for each layer. Next, create a dictionary that pairs each security layer with its priority. Finally, add a summary statement that explains the importance of using multiple layers.

📋 What You'll Learn

Create a list called security_layers with these exact items: 'Firewall', 'Antivirus', 'Encryption', 'Access Control', 'Security Awareness Training'

Create a dictionary called layer_priority with these exact key-value pairs: 'Firewall': 1, 'Antivirus': 2, 'Encryption': 3, 'Access Control': 4, 'Security Awareness Training': 5

Create a new dictionary called defense_in_depth that combines security_layers and layer_priority so each layer maps to its priority

Create a string variable called summary with the exact text: 'Defense in depth uses multiple layers of security to protect systems even if one layer fails.'

💡 Why This Matters

🌍 Real World

Companies use defense in depth to protect their networks and data by layering security controls, so if one control fails, others still provide protection.

💼 Career

Understanding defense in depth is essential for cybersecurity roles like analyst, engineer, or auditor to design and evaluate secure systems.

1

Create the list of security layers

Create a list called security_layers with these exact items in order: 'Firewall', 'Antivirus', 'Encryption', 'Access Control', 'Security Awareness Training'

Cybersecurity

# Create the list security_layers with the specified items
# Your code here

Need a hint?

Use square brackets [] to create a list and separate items with commas.

2

Create the priority dictionary

Create a dictionary called layer_priority with these exact key-value pairs: 'Firewall': 1, 'Antivirus': 2, 'Encryption': 3, 'Access Control': 4, 'Security Awareness Training': 5

Cybersecurity

security_layers = ['Firewall', 'Antivirus', 'Encryption', 'Access Control', 'Security Awareness Training']
# Create the dictionary layer_priority with the specified key-value pairs
# Your code here

Need a hint?

Use curly braces {} to create a dictionary with keys and values separated by colons.

3

Combine layers and priorities into one dictionary

Create a new dictionary called defense_in_depth that maps each item in security_layers to its priority from layer_priority. Use a dictionary comprehension with layer as the loop variable.

Cybersecurity

security_layers = ['Firewall', 'Antivirus', 'Encryption', 'Access Control', 'Security Awareness Training']
layer_priority = {'Firewall': 1, 'Antivirus': 2, 'Encryption': 3, 'Access Control': 4, 'Security Awareness Training': 5}
# Create defense_in_depth dictionary using comprehension
# Your code here

Need a hint?

Use {key: value for item in list} to create the dictionary.

4

Add a summary statement

Create a string variable called summary with this exact text: 'Defense in depth uses multiple layers of security to protect systems even if one layer fails.'

Cybersecurity

security_layers = ['Firewall', 'Antivirus', 'Encryption', 'Access Control', 'Security Awareness Training']
layer_priority = {'Firewall': 1, 'Antivirus': 2, 'Encryption': 3, 'Access Control': 4, 'Security Awareness Training': 5}
defense_in_depth = {layer: layer_priority[layer] for layer in security_layers}
# Create the summary string variable
# Your code here

Need a hint?

Use single or double quotes to create the string exactly as shown.