Zero trust architecture basics in Cybersecurity - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is the core principle of Zero Trust Architecture?

Never trust, always verify. This means no user or device is trusted by default, even if inside the network.

beginner

Why does Zero Trust Architecture assume breach?

It assumes attackers may already be inside the network, so continuous verification and strict access controls are needed.

intermediate

Name two key components of Zero Trust Architecture.

1. Strong identity verification (like multi-factor authentication). 2. Least privilege access (users get only the access they need).

intermediate

How does Zero Trust Architecture handle device security?

It continuously checks device health and compliance before allowing access, ensuring only trusted devices connect.

beginner

What role does network segmentation play in Zero Trust?

It divides the network into smaller parts to limit access and reduce the impact if a breach occurs.

What does Zero Trust Architecture primarily focus on?

A Never trusting any user or device without verification

B Allowing free access inside the network

C Trusting all internal users by default

D Only securing the network perimeter

Zero Trust means never trusting users or devices without verifying their identity and security status.

Which of the following is a key practice in Zero Trust Architecture?

A Single-factor authentication

B Least privilege access

C Open network access

D Ignoring device health

Least privilege access means users get only the minimum access needed, reducing risk.

Why is continuous monitoring important in Zero Trust?

A To detect and respond to threats quickly

B To allow unrestricted access

C To reduce network speed

D To trust devices once verified

Continuous monitoring helps detect suspicious activity and respond before damage occurs.

What does network segmentation help prevent in Zero Trust?

A Device updates

B Faster internet speed

C User convenience

D Wider spread of attacks

Segmenting the network limits how far an attacker can move if they breach one part.

Which technology supports strong identity verification in Zero Trust?

A Password only

B Guest access

C Multi-factor authentication

D Open Wi-Fi

Multi-factor authentication adds extra layers of identity proof beyond just passwords.

Explain the main idea behind Zero Trust Architecture and why it is important in cybersecurity.

Think about how trusting everyone inside a network can be risky.

Describe how network segmentation and least privilege access work together in Zero Trust Architecture.

Consider how dividing a network and limiting user rights help security.

Practice

1. What is the main principle of Zero Trust Architecture?

easy

A. Never trust, always verify

B. Trust all users inside the network

C. Allow access based on user location

D. Grant full access after initial login

Solution

1. Step 1: Understand the core idea of Zero Trust

   Zero Trust means no automatic trust is given to any user or device, even inside the network.

2. Step 2: Identify the correct principle

   The principle is to always verify identity and permissions before granting access.

3. Final Answer:

   Never trust, always verify -> Option A

4. Quick Check:

   Zero Trust = Never trust, always verify [OK]

Hint: Remember: trust no one without checking first [OK]

Common Mistakes:

• Assuming internal users are always trusted
• Believing location alone grants access
• Thinking initial login grants full access

2. Which of the following is a correct feature of Zero Trust Architecture?

easy

A. Users get unlimited access after one login

B. Network perimeter is the only security focus

C. Access is granted based on continuous verification

D. Devices are trusted if they are on the company Wi-Fi

Solution

1. Step 1: Review how Zero Trust manages access

   Zero Trust requires continuous checks, not just one-time login or location-based trust.

2. Step 2: Identify the correct feature

   Continuous verification ensures access is only given when conditions remain safe.

3. Final Answer:

   Access is granted based on continuous verification -> Option C

4. Quick Check:

   Zero Trust = continuous verification [OK]

Hint: Access needs ongoing checks, not just one-time approval [OK]

Common Mistakes:

• Thinking one login grants unlimited access
• Trusting devices just because they are on Wi-Fi
• Focusing only on network perimeter security

3. Consider this scenario: A user tries to access a sensitive file. According to Zero Trust principles, what happens next?

medium

A. The system verifies the user's identity and device security before access

B. Access is denied because the user is inside the network

C. The user is granted access immediately if logged in

D. The user is asked to change their password before access

Solution

1. Step 1: Analyze Zero Trust access control

   Zero Trust requires verification of identity and device status before allowing access.

2. Step 2: Apply this to the scenario

   The system checks if the user and device meet security requirements before granting access.

3. Final Answer:

   The system verifies the user's identity and device security before access -> Option A

4. Quick Check:

   Zero Trust = verify identity and device before access [OK]

Hint: Access needs identity and device checks, not just login [OK]

Common Mistakes:

• Assuming login alone grants access
• Denying access just because user is inside network
• Thinking password change is always required

4. A company implements Zero Trust but notices users can access data without verification. What is likely the problem?

medium

A. Users are outside the company network

B. Users have too many passwords

C. Network firewall is blocking traffic

D. Verification steps are missing or not enforced

Solution

1. Step 1: Identify the issue with access control

   If users access data without verification, the verification process is not working properly.

2. Step 2: Determine the cause

   Missing or unenforced verification steps allow unauthorized access, breaking Zero Trust principles.

3. Final Answer:

   Verification steps are missing or not enforced -> Option D

4. Quick Check:

   Access without verification = missing enforcement [OK]

Hint: Check if verification steps are active and enforced [OK]

Common Mistakes:

• Blaming passwords instead of verification process
• Assuming firewall blocks cause access without checks
• Thinking user location affects verification

5. A company wants to apply Zero Trust to protect its cloud data. Which approach best fits Zero Trust principles?

hard

A. Allow all employees full cloud access after VPN login

B. Grant access to cloud data only after verifying user identity, device health, and context

C. Trust devices connected to the office Wi-Fi without extra checks

D. Use a single password for all cloud services to simplify access

Solution

1. Step 1: Understand Zero Trust for cloud security

   Zero Trust requires verifying multiple factors like user identity, device status, and context before access.

2. Step 2: Evaluate each option

   Only Grant access to cloud data only after verifying user identity, device health, and context includes verifying identity, device health, and context, matching Zero Trust principles.

3. Final Answer:

   Grant access to cloud data only after verifying user identity, device health, and context -> Option B

4. Quick Check:

   Zero Trust cloud = verify identity, device, context [OK]

Hint: Verify identity, device health, and context before access [OK]

Common Mistakes:

• Trusting VPN login alone
• Assuming office Wi-Fi devices are safe without checks
• Using one password for all services