OCR Computer Science Cyber Security Revision Notes
Master OCR Computer Science Cyber Security using simple revision notes, key facts and practice questions — all generated by AI for your exam.
Cyber security is the practice of protecting systems, networks, and programs from digital attacks. These attacks typically aim to access, change, or destroy sensitive information, or disrupt normal business processes.
Key Concepts
- 1Types of cyber threats include malware, phishing, and denial-of-service attacks.
- 2Encryption is a key technique used to protect data confidentiality.
- 3Firewalls and intrusion detection systems help monitor and control incoming and outgoing network traffic.
- 4User education and awareness are critical in preventing social engineering attacks.
- 5Regular software updates and patches are essential for maintaining security.
Simple Explanation
Cyber security is all about keeping computers and networks safe from bad guys who want to steal or damage information. It involves using tools and techniques like passwords, firewalls, and encryption to protect data. People also need to be careful and know how to spot scams to help keep their information secure.
Memory Trick
“Remember the acronym 'PEACE': Protect, Encrypt, Assess, Control, Educate.”
Flashcards
What is malware?
Tap to reveal answer
Exam Questions
Describe and explain the importance of encryption in cyber security. [6 marks]
6 marksView mark scheme hint▾
Define encryption, explain its purpose, and discuss its role in protecting data confidentiality.
Explain how firewalls contribute to network security. [4 marks]
4 marksView mark scheme hint▾
Describe what a firewall does and how it helps in preventing unauthorized access.
What is meant by phishing? [2 marks]
2 marksView mark scheme hint▾
Define phishing and provide an example of how it is used in cyber attacks.
Practice Quiz
What is the main purpose of encryption?
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