A complete, ready-to-teach unit covering OCR J277 1.4 Network security: the threats to computer systems and networks, and the methods used to identify and prevent vulnerabilities.

What’s included

5 editable PowerPoint lessons:
Threats to networks and malware (virus, worm, trojan, spyware, ransomware)
Social engineering (phishing, blagging, shouldering) and brute force attacks
Denial of service and DDoS, data interception and SQL injection
Preventing vulnerabilities: penetration testing, anti-malware and firewalls
Preventing vulnerabilities: user access levels, passwords, encryption, physical security, and matching each threat to its prevention
Work booklet (15 pages) with answers: two pages of activities per lesson, finishing with exam questions. Activities include naming the malware, sorting phishing, blagging and shouldering scenarios, ranking passwords, writing a password policy and matching threats to prevention. A unit review (keyword match-up and fill-the-gaps), a progress tracker, key facts and a glossary are included.
Homework booklet (12 pages) with answers: five homeworks, one per lesson, each with quick recall, exam practice, a question on an earlier lesson and a reflection task. There’s also a score record sheet.
End-of-unit test (50 marks, 50 minutes) with mark scheme: multiple-choice and structured questions, plus an 8-mark extended response about protecting a school’s network.

Each lesson includes

Learning objectives
A Do Now with answers
Key terms and clear diagrams, including a DDoS botnet and a SQL injection login form
A “Common Mistakes” slide
Green, amber and red independent practice, with answers
Exam questions with a mark scheme
A six-question success check
A plenary and teacher notes

Why teachers use it

Follows the J277 1.4 specification wording
Every resource has answers, saving marking and planning time
Fully editable, with a consistent design across lessons and booklets
Free student revision notes for this topic at

Editable PowerPoint (.pptx). Print the booklets and test on A4.