🔥 Complete Cyber Security Course For 2023 | Cyber Security Full Course for Beginners | Simplilearn

Introduction to the concept of cyber security and the increasing demand for cyber security experts in the industry. The chapter discusses the risks and consequences of cyber attacks and the various roles and salary ranges in the cyber security field.

Exploring the wide range of job opportunities in the cyber security industry with details on roles like security analysts, penetration testers, cyber security engineers, and Chief Information Security Officers (CISOs) along with their respective salary ranges and career prospects.

Introducing a postgraduate program in cyber security with key features such as modules from renowned institutions like MIT SSC and EC Council, live online classes, job assistance, and skill development in areas like hacking concepts, network security, and risk management.

Discussing a cyber security attack on a fictional character, Anne, and analyzing the types of cyber attacks she could have faced such as malware attacks, phishing, man-in-the-middle attacks, and password attacks. The chapter also covers preventive measures like firewalls, honeypots, and best practices to enhance cyber security.

Exploring cyber attacks targeting public and private organizations, including advanced persistent threats (APTs), denial of service attacks (DDoS), and SQL injection attacks. The chapter highlights the challenges faced by organizations in maintaining network security and the role of cyber security professionals in mitigating threats.

Listing the top 10 reasons to consider a career in cyber security, including the basic requirements for entry, the demand for cyber security professionals, the flexibility of the field, job security, and the continuous evolution and challenges in the cyber security domain.

Detailing the diverse career opportunities in cyber security, such as ethical hackers, security architects, and Chief Information Security Officers (CISOs), along with the skills and certifications required to excel in these roles.

Various tools like Accuratics, Iconetix, and Air Garden are discussed that help with vulnerability detection, application security testing, and Wi-Fi network auditing.

Iconetix, a dynamic application security testing package, is compared to traditional SASD scanners, highlighting its perks and ability to streamline testing from development to deployment.

Air Garden, a multi-use bash script, is described as a tool used for Linux systems to hack and audit wireless networks, supporting various hacking modes like WPS hacking, Handshake captures, and more.

John the Ripper, an open-source tool for password security auditing and recovery, is detailed with features like supporting hundreds of hash types and easing password cracking with customizable processes like dictionary attacks.

The benefits of conducting ethical hacking audits are explained, emphasizing the importance of identifying defects from an attacker's perspective and preemptively fixing weak points in network infrastructure.

The differences between VPN and proxy services are outlined, focusing on how VPNs create secure tunnels for data transfer and offer better security and anonymity compared to proxies.

The role and functioning of firewalls as security devices that filter incoming and outgoing network traffic to prevent cyber attacks are discussed.

The concept and types of ransomware, including locker ransomware, crypto ransomware, and scareware, along with prevention steps are presented.

Success stories of learners who took a cyber security course and achieved certifications, leading to career advancements and stability in the cybersecurity field are shared.

Learn about different types of malware such as viruses, trojan horses, ransomware, spyware, and adware, along with how they function and impact devices.

Discover essential steps to protect yourself from malware, including software updates, strong passwords, cautious online behavior, antivirus software, and data backups.

Explore the use of Chat GPT in cyber security for monitoring network activity, identifying threats, ransomware protection, password management, employee training, incident management, and compliance management.

See a hands-on demonstration of Chat GPT in cyber security, including responses to queries about cyber security concepts, code snippets, and demonstration on SQL injection vulnerability.

Explanation of different types of SQL injection attacks, including Union-based and Boolean-based SQL injection, and how hackers can gain information and infer their next steps from errors and query outputs.

Discussion on time-based SQL injections and out-of-bound attacks, highlighting how hackers verify SQL command execution and the importance of access controls and user privileges in preventing attacks.

Methods to prevent SQL injection attacks, such as using prepared statements, object relational mapping, and password hashing. It also covers the importance of third-party authentication, updating software, and monitoring SQL statements.

Explanation of phishing attacks, including types like deceptive phishing and spear phishing. It highlights the importance of third-party authentication, web application firewalls, and continuous software updates to prevent such attacks.

Overview of cross-site scripting attacks, different types like reflected, stored, and DOM-based XSS attacks, and methods to prevent XSS attacks using validation, content security policy, and HTTP only flag in cookies.

In 2018, GitHub, a platform for software development, was attacked by Chinese authorities with a DDOS attack causing system instability. This attack led companies to reevaluate their security practices to combat such threats.

A distributed denial of service (DDOS) attack occurs when attackers overwhelm a service, making it impossible to deliver. This can target servers, devices, networks, applications, and specific transactions within applications.

DDOS attacks drown systems with data requests, overwhelming resources like internet bandwidth, CPU, and RAM. These attacks often utilize botnets to launch coordinated attacks on specific targets.

DDOS attacks can be volume-based, protocol-based, or application-based, each targeting different parts of the system. These attacks aim to disrupt services by overwhelming the target with traffic.

DDOS attacks are conducted for various reasons, including gaining a competitive advantage, holding companies at ransom, or as a form of online activism. These attacks can have significant financial and reputational consequences for the victims.

Companies and individuals can protect against DDOS attacks by employing load balancers, firewalls, and cloud providers with strong cybersecurity measures. Increasing bandwidth and utilizing content delivery networks can also help mitigate the impact of DDOS attacks.

A demonstration using VMware and Wireshark shows how a DDOS attack can overwhelm a server, causing it to become unresponsive. The demo highlights the importance of protecting systems from such attacks.

Brute force attacks involve trying multiple combinations of passwords until the correct one is found. These attacks target weak passwords and can be mitigated by using complex and unique passwords, two-factor authentication, and other preventive measures.

A demonstration using tools like Hydra and Aircrack shows how a brute force attack can crack passwords, emphasizing the importance of using strong passwords and security measures.

Botnets are networks of interconnected devices infected with malware, controlled by a central server, and used for various cybercrimes. They operate through client-server or peer-to-peer models to carry out attacks and evade detection.

Keyloggers are malicious programs that record keystrokes, capturing sensitive data like passwords. They can enter systems through software downloads, risky links, or pop-ups. Keyloggers pose serious security risks and can be challenging to detect.

Discusses the prevention of system infections by malicious programs through the use of antivirus software, system security protocols, and safe handling of sensitive data such as bank details and passwords.

Details the steps required to prepare for a demo on keyloggers, including downloading necessary libraries, importing modules, and writing code to record and save data into a log file.

Explains the coding steps involved in saving recorded data, designing key functions like while press and while release, and looping these functions for program functionality.

Demonstrates the execution of the coded program, opening Notepad to test the program's functionality, and checking the recorded data in the keylog text file.

Summarizes the key insights learned about keyloggers, including system infections, detection methods, types of keyloggers, hacker usage of recorded data, prevention points, and considerations for mobile devices.

Explains the Pegasus spyware platform, its development, capabilities to track user information, targeted devices, impact on security and privacy, and usage by state-sponsored entities for surveillance purposes.

Describes the SolarWinds cyber attack, its timeline, impact on government agencies and private companies, the role of software updates in the breach, and investigations into the incident.

Details the Anonymous hack on Russian State TV channels in response to Russian aggression in Ukraine, including the repercussions, data breaches, and the impact of cyber warfare on global dynamics.

Explains the concept of cyber warfare, its impact on government and civilian infrastructure, the role of espionage, sabotage, and denial of service attacks, and the advantages and challenges of cyber warfare compared to traditional warfare.

Highlights the top 10 computer hacks of all time, including cyber attacks on countries, organizations, and individuals, showcasing the magnitude of cyber threats and vulnerabilities across various sectors.

Explains the importance of network security, the need to protect against internal and external threats, and the basics of network security infrastructure and strategies.

Discusses the use of password protection as a part of network security, highlighting the vulnerabilities and importance of securing data within a network.

Explains how network security protects workstations from hazards, secures shared data, encrypts information, and offers multiple levels of protection against cyber threats.

Addresses the challenges of network security in today's hyper-connected environment, including the need to protect network traffic and infrastructure from increasing cyber assaults.

Details the processes of authentication and authorization in network security, emphasizing the importance of verifying user identities and determining access levels.

Discusses the role of network security management tools in identifying and addressing threats, ensuring business continuity, and protecting data and infrastructure.

Explains the fundamental types of network security including physical, technical, and administrative security measures to safeguard data and networks from various threats.

Explores the transport layer for secure data transmission and the application layer for protection against cyber attacks, emphasizing the importance of secure connections and data integrity.

Details essential network security tools such as firewalls, VPNs, intrusion prevention systems, and behavioral analytics to enforce network security policies and protect against cyber threats.

Highlights the benefits of network security, including protection against external and internal threats, increased productivity, brand trust, and reputation management in the digital age.

Introduces the concept of cryptography, explaining encryption and decryption processes, the use of algorithms, and the importance of data security in the digital world.

Explores symmetric encryption in cryptography, discussing the use of a single key for both encryption and decryption, its applications in data security, and popular symmetric encryption algorithms like AES and DES.

Explanation of the Shannon structure proposed in 1945 and the crystal Cipher structure suggested by host Feistel for symmetric block ciphers with emphasis on confusion, diffusion, and decryption.

Details the implementation of the Feistel cipher structure where blocks of 64-bit information are divided into two halves and encrypted using unique encryption keys in multiple rounds.

Description of the polynomial function in the Feistel cipher where one block half is expanded, reduced in size, and encrypted iteratively to ensure block cipher security and efficiency.

Comparison of block sizes, encryption speed, and key sizes in modern ciphers like AES to balance between security and speed in symmetric block ciphers.

Transition from DES to AES as the global encryption standard due to advancements in encryption power and technology, highlighting the importance of AES in modern encryption.

Explanation of key generation, round structures, and security features of the Advanced Encryption Standard (AES) in symmetric block ciphers for data encryption and decryption.

Process of DES encryption involving 16 rounds, key management, and various modes of operation like electronic codebook, Cipher block chaining, and output feedback for effective encryption.

Detailed explanation of different modes of operation in DES including Electronic Codebook, Cipher Block Chaining, Output Feedback, and Counter method for secure data encryption.

Introduction to the Advanced Encryption Standard (AES) algorithm with details on its structure, key sizes, encryption process, and its dominance over DES for secure data encryption.

Explanation of asymmetric key cryptography, public key encryption, key exchange, and applications of RSA encryption for secure communication and data encryption.

Explanation of ciphers and steps required for encryption and decryption functions, including key generation process, formulae for encryption and decryption, and data encryption example using RSA algorithm.

Comparison of RSA algorithm with symmetric cryptography, advantages of RSA encryption, data encryption example using RSA, and factors that make RSA algorithm standard and secure.

Comparison of plain text storage, encryption with decryption key, and hashing for password storage, highlighting the strengths, weaknesses, and security implications of each method.

Explanation of hashing process, hash functions, irreversible nature of hashes, hashing algorithms, and applications like password storage, integrity checks, and file verification.

Detailed procedure of how the MD5 hash algorithm works, including steps like data preparation, message digest buffer initialization, block breakdown, operations rounds, circular shifts, and final digest generation.

Detailed procedure of how the SHA hash algorithm works, including steps like data preparation, hashing process, chaining variable initialization, block breakdown, constant values utilization, output calculation, and final digest generation.

Explanation of password cracking techniques including phishing, social engineering, dictionary attacks, rainbow tables, and brute force attacks, along with tools like Kane and Abel, John the Ripper, and Rainbow Crack.

Guidelines for creating strong passwords including password length, complexity, avoidance of personal information, unique passwords, passphrases, two-factor authentication, and the importance of strong passwords in enhancing security.

Guidelines for creating strong passwords including length, upper and lowercase letters, numerical values, and special characters. Emphasis on avoiding dictionary terms, single character repetition, and using personal information in passwords.

Explanation of passphrases as longer, more secure alternatives to traditional passwords. Benefits of passphrases and how they strengthen data security.

Comparison of passphrases with common passwords in terms of complexity, security, and hacking resistance. Benefits of using passphrases in various applications and systems.

Importance of security in protecting WhatsApp accounts, risks associated with hacking, and methods to safeguard accounts from malicious activities. Overview of encryption usage in WhatsApp for enhanced security.

Measures to prevent hacking, including regular security checks, using certified antivirus software, accessing secure websites, avoiding random web pop-ups, and employing strong passwords. Importance of multi-factor authentication and password managers for enhanced security.

Introduction to Kali Linux as a penetration testing and security auditing distribution. History, features, and multiple ways to install Kali Linux including live USB, virtualization, and dual boot system.

The chapter covers the installation of the Grub Bootloader on a hard disk after the completion of the installation process of Kali Linux, highlighting the importance of Grub Bootloader in starting the operating system correctly.

The installation of Kali Linux is completed, and the system boots up without checking for the ISO file as the operating system is now installed on the virtual hard disk storage.

An overview of Parrot Security, a Debian-based Linux distribution emphasizing security, privacy, and development, containing tools for penetration testing, computer forensics, and reverse engineering.

Exploration of the minimum system requirements for running Parrot Security, including CPU, RAM, storage, and booting options like Legacy BIOS or UEFI settings.

A comparison between Parrot Security and Kali Linux, discussing their unique features, hardware specifications, and usability for different types of users, aiding in selecting the appropriate distribution based on user requirements.

Step-by-step guidance on installing Parrot Security OS, including obtaining the ISO file, configuring a virtual machine using VMware, and completing the installation process to boot up the operating system.

Introduction to ethical hacking concepts, overview of Kali Linux and Parrot Security OS, comparison of their features, specifications, and user suitability based on hardware requirements and performance.

Explanation of Nmap, a network mapping utility, its workflow in ethical hacking, phases of ethical hacking including reconnaissance, scanning, gaining access, maintaining access, and clearing tracks, highlighting Nmap's importance in reconnaissance and scanning phases.

Discussion on packet analysis through TCP FIN packets and the significance of TCP FIN packets in network communication.

Explanation of null scans, alternative tools to Nmap, and an overview of Nmap's features and benefits.

Guide on installing Nmap on different operating systems, checking pre-installation, and using package managers like apt.

Demonstration of basic Nmap scans like ping scans, port scans, detecting operating systems, and service versions.

Running scans on vulnerable machines, interpreting scan results, and using Metasploit to exploit vulnerabilities.

Explanation of IDS, types of intruders, methods of intrusion detection, and types of IDS systems.

Introduction to IAM, IAM components, the IAM process, and tools for IAM implementation.

Discussion on the importance of cybersecurity certifications, types of certifications, and exam details for CCNA certification.

Questions in exams have different weightage based on the question depth and difficulty level. Scoring between 800 to 850 marks is required to clear the exam.

CompTIA Security Plus certification focuses on securing networks, applications, and devices. It emphasizes practical skills in network security. Recommended for candidates with at least two years of IT sector experience.

The Security Plus certification involves hands-on practical execution of concepts to gain knowledge. Candidates with Network Plus certification from CompTIA are preferred. The exam fee is 339 dollars.

This certification is ideal for applying for security analyst or engineer positions analyzing and resolving data-related issues in organizations. The average annual salary for this role is around 72,000 dollars.

The CEH training from EC-Council teaches penetration testing and ethical hacking, focusing on finding and fixing security vulnerabilities. Candidates need at least two years of networking or security experience.

Explains what a VPN is, its purpose, how it works, and its advantages in securing internet connections.

Discusses the benefits of distributed processing, including data recovery, cost-effectiveness, and scalability, with examples like blockchain.

Describes TCP/IP as a set of protocols facilitating internet communication, the role of TCP and IP in data transmission, and the TCP model's layers.

Explains IPConfig for Windows and IfConfig for Linux, detailing how they display network interface configurations like IP address, subnet mask, and default gateway.

Differentiates between a domain and a workgroup in networking, highlighting centralized vs. decentralized network models with user management aspects.

Explains data encapsulation by adding headers and trailers to data packets for routing, with emphasis on MAC addresses and IP addresses for communication.

Provides insights into securing computers through authentication, secure passwords, regular updates, antivirus software, firewalls, and encryption techniques.

Compares security aspects like pointers, code translations, storage allocation, and inheritance in C, C++, and Java, highlighting the security levels of each language.

Identifies common sources of malware infections, including pop-up ads, removable media, email attachments, downloads, and phishing emails.

Explains how email systems work, including sending, receiving, and DNS security, along with common malware sources through malicious email attachments.

Developers test based on their criteria, interact with testers to identify flaws, develop patches, and repeat testing to ensure flaws are resolved.

Virtual memory is created on the hard disk to supplement RAM, allowing the processor to utilize it for data swapping.

Different scheduling algorithms include First Come First Serve, Shortest Job First, Priority Scheduling, Process Queues, Shortest Remaining Time, and Round Robin method.

Steps involve reconnaissance, scanning, gaining access, maintaining access, and covering tracks to ensure unauthorized access remains undetected.

Different sniffing tools like Wireshark, TCP dump, Microsoft Message Analyzer, Ettercap, Dsniff, and Driftnet are used to capture and analyze network data for troubleshooting and security purposes.

An operating system serves as a platform for hardware to interact with software, enabling human-computer interaction and controlling hardware functions.

Micro kernels are small and secure but slower, while macro kernels are larger, faster, and harder to extend, used in different types of operating systems.

Batched OS processes batches of jobs, distributed OS connects multiple computers, time-sharing OS allocates shared time, multi-programmed OS schedules CPU for jobs, and real-time OS prioritizes critical operations.

Logical addresses are generated during application running, while physical addresses are physical locations on memory modules, essential for addressing and storing data.

The Shell in Linux is a command line interface for interacting with the operating system, with variations like bash, zsh, ksh used for different purposes.

Discusses the concept of converting data from readable to non-readable format and back to readable format using encryption algorithms like shifting the alphabet by a certain key.

Explains cryptography as the process of using a key to scramble readable text into unreadable ciphertext, highlighting the difference between ciphertext and clear text.

Describes block cipher as a method to encrypt data stored on a hard disk by breaking it into fixed-size blocks and encrypting each block individually.

Defines public key infrastructure as a system of policies and cryptographic keys (public and private) used for secure communication between a server and a client.

Introduces RSA as a public key cryptosystem for secure data transmission, mentioning the creators and how it uses public and private keys.

Lists alternative encryption algorithms like Authenticator, LastPass, Google Authenticator, and OCTA that can be used alongside RSA for data security.

Outlines the prime objectives of modern cryptography, including confidentiality, authenticity, non-repudiation, and integrity, explaining each concept in detail.

Explains the SAFER algorithm as a secure and fast encryption routine typically used for digital payment card transactions to ensure high security based on PCI DSS standards.

Discusses the Blowfish algorithm as a 64-bit symmetric encryption algorithm that uses the same key for encryption and decryption, focusing on its technical aspects and key length.