This week, Emma looks at malware and network attacks for your GCSE ComSci exam. She looks at the different types of attacks that can be launched against a system like viruses, worms, trojans and backdoors, as well as penetration testing. Perfect for OCR, AQA, Edexcel and WJEC GCSE and iGCSE exam boards. Ideal for preparing you for your GCSE Computer Science exam.