🔐 Cyber Security & Ethical Hacking – Complete Guide

🔹 What is Cyber Security?

Cyber Security means protecting computers, networks, servers, and data from:

Hackers
Malware
Viruses
Data theft
Cyber attacks

Its goal is to keep information safe and secure.

🔹 What is Ethical Hacking?

Ethical Hacking is legal hacking 🧑‍💻
An ethical hacker:

Finds security weaknesses
Fixes them before real hackers exploit them
Works with permission (100% legal)

👉 Ethical hackers are also called White Hat Hackers.

🔍 Difference: Hacker vs Ethical Hacker

Hacker	Ethical Hacker
Illegal activity	Legal & authorized
Steals data	Protects data
Causes damage	Improves security

🧠 CYBER SECURITY – CORE AREAS

1️⃣ Networking Fundamentals (Very Important)

IP Address
DNS
TCP/IP
HTTP / HTTPS
Firewalls
Routers & switches

2️⃣ Operating Systems

Linux (Kali Linux)
Windows security basics
File systems & permissions

3️⃣ Cyber Attacks & Threats

Malware
Phishing
Ransomware
DDoS attacks
SQL Injection
XSS (Cross-Site Scripting)

4️⃣ Security Concepts

CIA Triad (Confidentiality, Integrity, Availability)
Encryption & Decryption
Hashing
Authentication & Authorization

5️⃣ Cyber Security Tools

Antivirus
Firewalls
IDS / IPS
SIEM tools

🧑‍💻 ETHICAL HACKING – IN DETAIL

1️⃣ Ethical Hacking Phases

Reconnaissance (Information gathering)
Scanning
Gaining access
Maintaining access
Covering tracks (for learning only)

2️⃣ Popular Ethical Hacking Tools

Kali Linux
Nmap
Metasploit
Wireshark
Burp Suite
John the Ripper

3️⃣ Web Application Security

SQL Injection
CSRF
XSS
Authentication flaws

4️⃣ Penetration Testing

Web apps
Networks
Wireless networks
Mobile apps

📜 CERTIFICATIONS (Important)

CEH (Certified Ethical Hacker)
CompTIA Security+
OSCP
CISSP (Advanced)

💼 CAREER OPTIONS

Cyber Security Roles:

Cyber Security Analyst
Security Engineer
SOC Analyst
Network Security Engineer

Ethical Hacking Roles:

Ethical Hacker
Penetration Tester
Bug Bounty Hunter

💰 Salary (India):

Fresher: ₹40,000 – ₹70,000 / month
Experienced: ₹1,50,000+ / month

🛣 LEARNING ROADMAP (Beginner)

Step 1

Computer basics + Networking

Step 2

Linux + Security fundamentals

Step 3

Ethical hacking tools

Step 4

Web application security

Step 5

Certifications + Projects

🧪 PRACTICE PLATFORMS (Legal)

TryHackMe
Hack The Box
OverTheWire
Bug bounty programs

🎓 ELIGIBILITY

12th pass or above
No age limit
Strong interest in security & networking