Computer Science

the process of applying an encryption algorithm to plaintext to produce ciphertext that cannot be understood (without decryption)

a piece of information that is used by an encryption algorithm to lock or unlock a message or data

an algorithm used to convert plaintext messages to ciphertext (encryption) or ciphertext to plaintext (decryption)

Encryption tools to protect communication

The cost of cyber crime and hacker motivation

Social engineering techniques

Malware: malicious software

Defence against malware

Common ciphers

Testing as a form of defence

The impact of fake news

Careers in cyber security

This unit enables pupils to develop awareness of a range of cybersecurity threats that impact the world and us as individuals. They will explore different forms of attack, both non-automated and automated and how encryption tools can be used to protect communication.

Cyber threats and security

What is the process of converting data into an unreadable format to prevent unauthorised access?

What is the method or algorithm used to encrypt and decrypt information?

Data is converted into ciphertext using an algorithm.

The recipient uses the correct key to decrypt the data.

Arrange the steps of how encryption protects data:

Encryption makes data completely safe and unbreakable.

Encryption eliminates the need for strong passwords.

Encryption prevents all types of cyberattacks.

Encryption improves security but is not foolproof.

Which of the following is true about encryption?

Match the following encryption applications to their purposes:

What does HTTPS indicate about a website?

add a layer of security against unauthorised access

identify and fix vulnerabilities in software

Match the following techniques to their purposes:

a weakness that can be exploited by attackers

apply input sanitisation and code reviews

implement strong passwords and two-factor authentication

Arrange the steps to secure a system from cyberattacks:

What is a deliberate attempt to damage, disrupt, or gain unauthorised access to computer systems or data?

to add a layer of security against unauthorised access

strong passwords and two-factor authentication

Which of the following adds an extra layer of security against unauthorised access?

Encryption tools to protect communication

Lesson outcome