Topic 7.2 · Computer · Cyber Security

Cryptography & Firewalls

Cryptography & Firewalls is studied as part of "Cyber Security" (Applications & Internet) in Computer. Malware, threats, cryptography, firewalls and cyber law — the security dimension of computing.

In the examination context, cryptography & firewalls carries conceptual questions that test both factual recall and analytical understanding. Revise this topic in sequence with the rest of the chapter so that chronological and thematic links are clear.

Important Facts

Phishing: Fraudulent emails to steal data
Firewall: Filters network traffic
Encryption: Encoding data to protect it
Virus: Malicious code that replicates

Key Points

Virus — Malicious code that replicates
Phishing — Fraudulent emails to steal data
Firewall — Filters network traffic
Encryption — Encoding data to protect it

Important Names

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Exam-Oriented Notes

»Antivirus software detects malware; firewalls control traffic; strong passwords and 2FA improve security.