Cyber Security Tutorial

Cyber security, also known as information technology security, refers to the practice of protecting systems, networks, and programs from digital attacks. These cyber-attacks are usually aimed at accessing, changing, or destroying sensitive information, extorting money from users, or interrupting normal business processes. This cybersecurity tutorial covers basic and advanced concepts, specially designed to cater to both beginners/students and experienced working professionals.

Why is Cybersecurity Important? Every day, millions of cyberattacks occur worldwide, targeting individuals, companies, and even governments. According to reports, a cyberattack happens every 39 seconds, affecting everything from small websites to massive cloud infrastructures. With the rise of IoT devices, cloud storage, and AI-driven automation, cybersecurity is more critical than ever.

This cybersecurity free course helps you gain a solid introduction to the fundamentals of cybersecurity and explore a wide range of topics, including network security, cryptography, threat detection, and incident response.

What is Cyber Security?

As we said in the introduction part that Cybersecurity is the practice of defending computer systems, networks, and data from malicious attacks and unauthorized access. It involves a range of technologies, processes, and practices designed to protect sensitive information, maintain data integrity, and ensure the availability of digital resources.

This includes implementing firewalls, encryption, intrusion detection systems, and antivirus software, as well as developing robust security policies and conducting regular vulnerability assessments. Cybersecurity also encompasses incident response, where experts identify, contain, and mitigate the impact of security breaches, and user education to prevent common threats like phishing and social engineering. In an increasingly digital world, effective cybersecurity is essential to safeguard personal information, corporate assets, and national security.

Cyber Security Tutorial

Prerequisites: Basic understanding of computer systems and networks is recommended but not required.

Introduction to Cyber Security

• What is Cyber Security
• OSI Security Architecture
• Security Attacks [active and passive]
• Security Services
• Models for Network Security

Cyber Technology

• Networking
• Wireless LAN Basics
• Web Basics
• Website
• Information Security Principles
• Cryptography
• Public Key Infrastructure
• Electronic Signature
• Access Management
• User Access Management
• Cloud Computing

Cyber Ethics

• Cyber ethics - Privacy
• License, Trademark and Copyright
• Intellectual Property
• Freedom of Speech
• Ethical Hacking
• Internet Fraud / scam

Cyber Crimes

• Cyber Crimes
• Cyber Criminal Types
• Psychological Profiling
• Social Engineering
• Cyber-stalking
• Botnets
• Attack Vector
• Malware
• Phishing
• Identity Theft (ID Theft)
• Cyber-terrorism

Cyber Crime Techniques

• Proxy Servers and Anonymizers
• Password Cracking

Keyloggers and Spyware

• Worms
• Trojan Horse
• Steganography
• DoS and DDoS Attacks
• SQL Injection
• Buffer Overflow
• Reverse Engineering
• Vulnerability Research
• Network Attacks
• WLAN Hacking
• Web Server Attacks
• VoIP Hacking & Countermeasures
• SMS Forging

Prevention and Protection

• System Backup
• Security Assessments
• Penetration Testing
• Security Testing Tools
• Intrusion Detection and Prevention
• Vulnerability Assessment (VA)
• Secure Coding

Cyber Forensics

• Forensic Activities
• Forensic Technologies
• Chain of Custody Concepts
• Digital Forensics Life Cycle
• Digital Forensics Tools
• Network Forensics
• Computer Forensics and Steganography
• Mobile Forensics

Cyber Crime Investigation

• Cyber Crime Investigation Basics
• Digital Evidence Collection
• Evidence Preservation
• Evidentiary Reporting
• Investigating Phishing Cases

Cyber Law

• IT Act
• Intellectual Property in Cyberspace
• What Is Cybersecurity Policy?
• Difference between an Information Security Policy and Cybersecurity Strategy

Cybersecurity Evolution

• Cybersecurity Evolution
• Internet
• e-Commerce

Cybersecurity Objectives

• Cybersecurity Metrics
• Security Management Goals
• Cybersecurity Frameworks
• Cyber Infrastructure Issues
• Cryptography and network security.

Classical Encryption Techniques

• Symmetric Cipher Model
• Substitution Techniques
• Transposition Techniques
• Difference between Substitution Cipher Technique and Transposition Cipher Technique
• Difference between Block Cipher and Transposition Cipher

Block Ciphers and the Data Encryption Standard

• Block Cipher Principles
• Data Encryption Standard
• Strength of DES
• Differential and Linear Cryptanalysis
• Block Cipher Design Principles
• Block Cipher modes of Operation
• The difference between Block Cipher and Stream Cipher.

Advanced Encryption Standard

• AES vs DES
• AES Cipher

More on Symmetric Ciphers

• Multiple Encryption and Triple DES
• Block Cipher Modes of Operation
• Stream Ciphers and RC4
• Implementation of RC4 algorithm

Introduction to Number Theory

• Fermat and Euler's Theorems
• The Chinese Remainder Theorem
• Discrete Logarithms

Public-Key Cryptography and RSA

• Principles of Public-Key Cryptosystems
• RSA Algorithm

Key Management: Other Public-Key Cryptosystems

• Key Management
• Diffie-Hellman Key Exchange
• Elliptic Curve Cryptography

Message Authentication and Hash Functions:

• Message Authentication Requirements
• Authentication Functions
• Message Authentication Codes
• Hash Functions
• Security of Hash Functions and MACs

Hash and MAC Algorithms

• Secure Hash Algorithm
• Whirlpool
• HMAC

Digital Signatures and Authentication Protocols

• Digital Signatures
• Authentication Protocols
• Digital Signature Standard

Authentication Applications

• Kerberos
• X.509 Authentication Service

Electronic Mail Security

• Pretty Good Privacy
• S/MIME

IP Security

• IP Security Overview
• IP Security Architecture
• Authentication Header
• What is Encapsulating Security Payload in Network Security?
• Combining Security Associations

Web Security

• Web Security Considerations
• Secure Socket Layer and Transport Layer Security
• Secure Electronic Transaction.

 Intruders

• Intruders
• Intrusion Detection
• Password Management.

Malicious Software

• Viruses and Related Threats
• Distributed Denial of Service Attacks.

Firewalls

• Firewall Design Principles
• Trusted Systems for network security.

Explore More: Check out our insightful cybersecurity news blogs for the latest trends, tips, and in-depth articles on enhancing your cybersecurity knowledge.

Other Important Resources

• Cyber Security Roadmap 2024
• Cybersecurity Interview Questions
• Cyber Security Salary in India

Cyber Security Certifications 2024

Here, we have listed top cyber security certifications with estimated cost and minimum qualifications. If you are looking to become a Cyber expert then, these are the must have certifications.

Cyber Security Interview Questions

• Cyber Security Interview Questions with Answers (2025)

Conclusion

This Cyber Security Tutorial has provided you with the basics to protect your digital assets. By understanding threats and using the right defenses, you can keep your data and systems secure. Stay updated and keep learning to handle new cyber threats. Whether you're just starting out or looking to improve your skills, this guide is a helpful resource for cyber security.