Cyber Security Course Summary

Introduction to Cyber Security

• Facebook recently removed 2.29 billion content pieces due to complaints about hacked accounts.
• Cyber crimes are projected to cost organizations worldwide up to $10.5 trillion by 2050.
• High demand for cyber security professionals in the job market.

Course Outline

• Basics of Cyber Security: Introduction to cyber security and its importance.
• Career Scope: Overview of job roles available in cyber security.
• Skills Required: Essential skills for a career in cyber security.
• Ethical Hacking and Network Masking: Understanding VPNs and proxies.
• Types of Cyber Attacks: DDOS, SQL injection, cross-site scripting.
• Cryptography: Encryption methods and algorithms.
• Linux Operating Systems: Tools used by cyber security analysts.
• Certifications: Overview of important cyber security certifications.
• Interview Preparation: Common interview questions for cyber security roles.

Understanding Cyber Attacks

Example Scenario

• Anne's Experience: Phishing attack leading to unauthorized access of her shopping cart account.
• Types of Cyber Attacks:
  • Malware: Trojans, adware, spyware.
  • Phishing: Fraudulent emails from legitimate sources.
  • Man-in-the-Middle: Hacker intercepts communication between two devices.
  • Password Attacks: Brute force attempts to guess passwords.

Cyber Security Techniques

1. Firewall Installation: Protects against unauthorized access.
2. Honeypots: Decoy systems used to attract attackers.
3. Unique Passwords: Importance of using complex passwords.
4. Antivirus Software: Protects against malware.
5. Regular Updates: Keep systems updated to mitigate vulnerabilities.

Cyber Security Jobs

Job Roles and Salaries

• Cyber Security Analyst: $80,000 (US), 6 LPA (India).
• Network Engineer: $85,000 (US), 4 LPA (India).
• Ethical Hacker: $96,000 (US), 5 LPA (India).
• Information Security Analyst: $99,000 (US), 7 LPA (India).
• Cyber Security Engineer: $101,000 (US), 7 LPA (India).
• Senior Security Consultant: $104,000 (US), 12 LPA (India).
• Application Security Engineer: $110,000 (US), 9 LPA (India).
• Security Architect: $150,000 (US), 20 LPA (India).
• Chief Information Security Officer: $195,000 (US), 19 LPA (India).

Cyber Security Interview Questions

Networking Questions

1. What is the OSI Model?
   • 7 Layers: Physical, Data Link, Network, Transport, Session, Presentation, Application.
2. Define Unicasting, Multicasting, and Broadcasting.
3. What is DNS?
   • Resolves domain names to IP addresses.
4. What is a Firewall?
   • Blocks incoming/outgoing traffic based on rules.
5. What is a VPN?
   • Creates an encrypted tunnel between client and server.

Software and Programming Questions

1. How do you keep a computer secure?
2. What is the difference between logical address space and physical address space?
3. What are different scheduling algorithms?
   • First-Come-First-Serve, Shortest Job First, Round Robin, etc.
4. What is the difference between microkernel and macrokernel?
5. What are the different types of operating systems?
   • Batch OS, Distributed OS, Real-Time OS, etc.

Cyber Attacks Questions

1. What is SQL Injection?
2. What is Spoofing?
3. What is a DDOS Attack?
   • Distributed Denial of Service, using multiple systems to overwhelm a target.
4. What is Ransomware?
   • Encrypts files and demands payment for decryption.
5. What is Social Engineering?
   • Manipulating people into divulging confidential information.

Conclusion

• Importance of cyber security in today's digital world.
• Continuous need for skilled professionals and staying updated with the latest threats and technologies.