cybersecurity basics
3
stories in this section
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Cybersecurity Basics and Security Certification Prep
Security+ exam vorbereitung works best when it starts with one decision: confirm the current CompTIA exam code and objectives, then study from those objectives. No formal prerequisites apply, so beginners can start directly. The exam builds on networking basics, so readers still asking what is cybersecurity should settle that first and then use this guide…
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Penetration Testing Basics
What is penetration testing? It is a simulated cyberattack against a computer system to find exploitable vulnerabilities. It counts as testing only when the system owner has authorised it in writing, and a lab network is the safest place to practise. This guide explains how a test differs from a scan, how the stages run…
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Firewalls Explained
A new service is running, yet outside visitors cannot reach it. What is a firewall in that situation? It is a rule-based filter between networks or on a host, and its rules decide which traffic passes. The quick answer is that a firewall compares each packet with an ordered list of rules and applies the…