Ethical Hacking

1. Basics: Hacking & Hacker Types

Hacking is the art of identifying vulnerabilities in a system and finding creative ways to exploit them. While the media often portrays hackers as criminals, the field is much broader.

Types of Hackers

• White Hat: Ethical hackers who use their skills for good, helping organizations find and fix security holes with permission.
• Black Hat: Malicious hackers who break into systems for personal gain, theft, or to cause disruption.
• Grey Hat: Hackers who may find a bug without permission but report it privately, operating in a legal gray area.
• Script Kiddies: Amateurs who use pre-made tools and scripts to launch attacks without understanding how they work.
• Hacktivists: Hackers who launch attacks for political or social causes.

2. Intermediate: Attacks, Malware & Ransomware

To defend a system, you must understand the weapons used against it.

Common Cyber Attacks

• Phishing: Using deceptive emails or messages to trick users into revealing sensitive data.
• DDoS (Distributed Denial of Service): Flooding a server with traffic to crash it.
• Man-in-the-Middle (MitM): Intercepting communication between two parties.
• SQL Injection: Inserting malicious code into database queries to steal data.

Malware & Ransomware

Malware (Malicious Software) is any software designed to harm a system. A specific and dangerous type is Ransomware.

3. Advanced: The Methodology & Cryptography ADVANCED

Professional ethical hacking follows a strict 5-phase methodology to ensure thorough testing.

The 5 Phases of Hacking

1. Reconnaissance: Information gathering about the target.
2. Scanning: Identifying open ports and vulnerable services.
3. Gaining Access: Exploiting a vulnerability to enter the system.
4. Maintaining Access: Ensuring a persistent connection (backdoors).
5. Clearing Tracks: Removing evidence of the attack to avoid detection.

Cryptography: The Science of Secrets

Cryptography is essential for protecting data. It involves converting readable data (plaintext) into an unreadable format (ciphertext).

• Symmetric Encryption: Uses the same key for both encryption and decryption (e.g., AES).
• Asymmetric Encryption: Uses a Public Key to encrypt and a Private Key to decrypt (e.g., RSA).
• Hashing: A one-way function that creates a fixed-size "fingerprint" of data (e.g., SHA-256).

Ethical Hacking Learning Roadmap

Mastering ethical hacking requires a combination of technical skill, legal knowledge, and an analytical mindset. Here is your step-by-step guide.