Cyber Security Tutorial

Last Updated : 28 Apr, 2026

Cyber security is the process of using best practices to protect computers, servers, systems, networks and programs from digital attacks such as viruses, worms, ransomware and other threats aimed at accessing, changing or destroying sensitive data, extorting money from users or interrupting normal business processes.

  • Identify and fix security vulnerabilities.
  • Prevent unauthorized access and data breaches.
  • Protect systems from malicious attacks and disruptions.
  • Ensure confidentiality, integrity and availability of information.

Cyber Security Basics

Covers core concepts like CIA triad, attacks, threat actors, industry trends and lab setup using Windows and Kali Linux.

Cyber Threats & Attackers

Cyber threats are attempts to damage, disrupt or gain unauthorized access to systems and data. This section covers cybercrimes, attacker behavior and common attack techniques.

Cybersecurity Evolution & Objectives

Covers the evolution of cybersecurity along with frameworks, metrics and protection of critical infrastructure.

Networking & System Foundations

This section covers the fundamental technologies behind modern digital systems, including computer networks, protocols, wireless systems, web technologies and cloud platforms.

Network Security Fundamentals

Learn the foundational concepts of network protection, covering segmentation, access control and monitoring for secure communication.

Traffic Analysis & Monitoring

Explore how to capture, inspect and analyze network packets with Wireshark to detect threats and troubleshoot issues.

Cryptography & Access Control

This section includes encryption methods, digital signatures and identity management to ensure data confidentiality and authentication.

Applied Cryptography & PKI

This section includes encryption methods, digital signatures and identity management to ensure data confidentiality and authentication.

Cyber Attack Techniques

Details common attacks on systems, networks and web applications like SQL injection, DoS/DDoS and SSRF.

System & Application Attacks

These attacks target software flaws or input validation gaps.

Network Attacks

Targeted at intercepting, manipulating or overwhelming data transmissions.

Web Attacks

Exploit misconfigurations, outdated server software or known CMS vulnerabilities (like WordPress plugins).

Authentication and Integrity Mechanisms

This section covers hash functions, MACs, digital signatures and authentication protocols used to protect data from tampering.

Authentication Applications

Here, Real-world authentication systems such as Kerberos, X.509, MFA and SSO that are used to securely manage user access and identity in modern applications.

Cyber Defense & Protection

This section includes backup strategies, secure coding practices, vulnerability assessment, penetration testing and tools like IDS/IPS to detect and prevent attacks.

Cyber Laws & Ethics

Explains legal, ethical and policy aspects of cybersecurity including IT laws and privacy.

Secure Communication Systems

This section focuses on securing data while it's in transit across email, web and network layers.

Email Encryption Standards

These techniques protect emails from being intercepted or altered.

Network Security

Protects the underlying network data before it reaches the app layer (VPNs, secure LANs, etc ).

Web Security

Secures websites, online payments and browser-server communication.

Cyber Forensics & Evidence Handling

Introduces digital forensics processes, tools and techniques for evidence collection and analysis.

Foundations

In this we introduce the methodology and structured lifecycle of forensic investigations.

Tools

Tools enable practical analysis of systems, storage and memory during investigations.

Domains

Different systems require unique forensic approaches based on their structure and use cases.

Cyber Crime Investigation Process

Explains how cybercrime investigations are conducted, including evidence handling and reporting.

Cyber Security Interview Questions