Network Security

This lesson covers network security threats and prevention methods. You need to understand common threats (malware, phishing, DoS, MITM, SQL injection) and prevention measures (firewalls, encryption, penetration testing, MAC filtering) for the OCR H446 specification.

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Why Network Security Matters

Networks are targets for attackers seeking to steal data, disrupt services, or gain unauthorised access. Organisations must implement multiple layers of security to protect their systems, data, and users.

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Common Network Threats

Malware

Malware (malicious software) is any software designed to damage, disrupt, or gain unauthorised access to a system.