Welcome to the Cyber Security In-Depth repository! This repository is dedicated to providing a comprehensive understanding of various cyber security concepts, tools, and practices essential for protecting digital assets and ensuring data privacy.

• Introduction
• Fundamentals
  • What is Cyber Security?
  • Types of Cyber Threats
  • Key Concepts
• Advanced Topics
  • Network Security
  • Cryptography
  • Endpoint Security
  • Incident Response
  • Cyber Threat Intelligence
• Tools and Technologies
  • Security Information and Event Management (SIEM)
  • Firewalls and Intrusion Detection Systems (IDS)
  • Penetration Testing Tools
  • Monitoring and Anomaly Detection
• Best Practices
• Resources
  • Books
  • Online Courses
  • Websites
  • Communities

Cyber security is a critical field that focuses on protecting computer systems, networks, and data from cyber threats. This guide covers various aspects of cyber security, from fundamental concepts to advanced practices.

• Definition: The practice of protecting systems, networks, and programs from digital attacks.
• Importance: Ensures the confidentiality, integrity, and availability of information.

• Malware: Malicious software designed to harm or exploit systems (e.g., viruses, ransomware).
• Phishing: Fraudulent attempts to obtain sensitive information by pretending to be a trustworthy entity.
• Denial of Service (DoS): Attacks that aim to make a system or network unavailable to users.
• Man-in-the-Middle (MitM): Attacks where an attacker intercepts and alters communication between two parties.

• Confidentiality: Ensuring that information is accessible only to those authorized to access it.
• Integrity: Protecting information from being altered or tampered with.
• Availability: Ensuring that information and resources are available to authorized users when needed.
• Risk Management: Identifying, assessing, and mitigating risks to information security.

• Definition: Protecting the integrity and usability of network and data.
• Key Techniques: Firewalls, VPNs, intrusion detection systems (IDS), and intrusion prevention systems (IPS).

• Definition: The practice of securing information by transforming it into an unreadable format.
• Key Techniques: Encryption, hashing, digital signatures, and public key infrastructure (PKI).

• Definition: Protecting devices that connect to the network from cyber threats.
• Key Techniques: Antivirus software, endpoint detection and response (EDR), and device management.

• Definition: The process of detecting, responding to, and recovering from cyber security incidents.
• Phases: Preparation, identification, containment, eradication, recovery, and lessons learned.

• Definition: Gathering and analyzing information about current and potential cyber threats.
• Sources: Open source intelligence (OSINT), technical intelligence (TECHINT), and human intelligence (HUMINT).

• Function: Collecting, analyzing, and reporting on security events from multiple sources.
• Examples: Splunk, IBM QRadar, and ArcSight.

• Firewalls: Prevent unauthorized access to or from a private network.
• IDS: Monitor and detect potential security breaches.
• Examples: Palo Alto Networks, Cisco ASA, and Snort.

• Purpose: Simulating cyber attacks to identify vulnerabilities.
• Examples: Metasploit, Nmap, and Burp Suite.

• Purpose: Continuously monitoring systems for unusual activity.
• Examples: Nagios, Zabbix, and Splunk.

• Regular Updates: Keeping software and systems up-to-date.
• Access Controls: Implementing strong access control measures.
• User Awareness: Educating users about security best practices.
• Incident Reporting: Establishing clear procedures for reporting security incidents.

• Cybersecurity for Beginners by Raef Meeuwisse
• Hacking: The Art of Exploitation by Jon Erickson
• The Web Application Hacker's Handbook by Dafydd Stuttard

• Coursera: Introduction to Cyber Security Specialization
• edX: Cybersecurity Fundamentals
• Udemy: Cyber Security Courses

• Krebs on Security
• The Hacker News
• [National Institute of Standards and Technology (NIST)](https