1. Introduction to Computer Security:

   • Definition: Computer security involves protecting computer systems, networks, and data from unauthorized access, attacks, and damage.

   • Importance: Safeguarding sensitive information, ensuring system integrity, and maintaining user privacy.

2. Types of Security Threats:

   • Malware: Viruses, worms, trojans, ransomware.

   • Cyberattacks: DDoS attacks, phishing, social engineering.

   • Insider Threats: Unauthorized access from within an organization.

3. Network Security:

   • Firewalls: Filtering and monitoring network traffic.

   • Intrusion Detection and Prevention Systems (IDPS).

   • Virtual Private Networks (VPNs) for secure communication.

4. Authentication and Authorization:

   • Password Policies: Strong password requirements.

   • Multi-Factor Authentication (MFA): Enhancing login security.

   • Role-Based Access Control (RBAC) for proper authorization.

5. Cryptography:

   • Encryption and Decryption: Securing data in transit and at rest.

   • Public-key cryptography and symmetric-key cryptography.

   • Digital Signatures and Certificates.

6. Security Policies and Procedures:

   • Developing and implementing security policies.

   • Incident Response Plans: Responding to security incidents.

   • User Training: Educating users on security best practices.

7. Security Assessment and Auditing:

   • Vulnerability Assessments: Identifying and mitigating weaknesses.

   • Penetration Testing: Simulating cyberattacks to test defenses.

   • Security Audits: Evaluating compliance with security policies.

8. Secure Software Development:

   • Writing secure code and avoiding common vulnerabilities.

   • Secure coding practices and code review.

   • Integration of security into the software development life cycle.

9. Wireless Network Security:

   • Securing Wi-Fi networks.

   • WPA3 encryption, MAC filtering, and disabling unnecessary services.

   • Bluetooth and IoT device security considerations.

10. Cloud Security:

    • Securing data and applications in cloud environments.

    • Shared Responsibility Model with cloud service providers.

    • Identity and Access Management in the cloud.

11. Security for Mobile Devices:

    • Mobile Device Management (MDM) for secure device configuration.

    • Application Security: Securing mobile apps.

    • Remote wipe and tracking features for lost or stolen devices.

12. Legal and Ethical Aspects:

    • Compliance with data protection laws (e.g., GDPR, HIPAA).

    • Ethical considerations in cybersecurity practices.

    • Reporting security incidents and breaches.

13. Emerging Trends in Computer Security:

    • Artificial Intelligence for threat detection.

    • Blockchain for secure transactions.

    • Adaptive security measures in response to evolving threats.

In summary, the "Computer Security in Practice" unit provides students with practical knowledge and skills to protect computer systems and networks from a variety of security threats. From foundational principles to emerging trends, the unit addresses the dynamic landscape of computer security in practical and applicable ways.