Computer Science Cybersecurity Network Security and Vulnerability Exploitation
Network Security and Vulnerability Exploitation
Network Security and Vulnerability Exploitation is a critical discipline focused on protecting the integrity, confidentiality, and availability of computer networks and their data, while also understanding and utilizing the methods attackers use to compromise them. This field involves implementing defensive measures like firewalls, intrusion detection systems, and encryption, as well as engaging in the offensive practice of identifying, assessing, and exploiting security weaknesses in network protocols, services, and configurations. By simulating real-world attacks through techniques like penetration testing, security professionals can proactively discover and remediate vulnerabilities, thereby strengthening the network's defenses against malicious actors.
1.1.
Core Security Principles
1.1.1.
Confidentiality
1.1.1.1. Data Classification
1.1.1.2. Information Sensitivity Levels
1.1.1.3. Data Encryption at Rest
1.1.1.4. Data Encryption in Transit
1.1.1.5.1. Discretionary Access Control
1.1.1.5.2. Mandatory Access Control
1.1.1.5.3. Role-Based Access Control
1.1.1.6. Data Masking Techniques
1.1.1.7. Data Loss Prevention
1.1.2.
Integrity
1.1.2.1. Data Integrity Concepts
1.1.2.2. Hashing Algorithms
1.1.2.3. Digital Signatures
1.1.2.4. Checksums and CRCs
1.1.2.5. Data Validation Techniques
1.1.2.6. Message Authentication Codes
1.1.3.
Availability
1.1.3.1. High Availability Concepts
1.1.3.2. Redundancy Strategies
1.1.3.3. Failover Mechanisms
1.1.3.5. Denial of Service Protection
1.1.3.6. Backup Strategies
1.1.3.7. Disaster Recovery Planning
1.1.3.8. Business Continuity
1.1.4.
Non-repudiation
1.1.4.1. Digital Signatures
1.1.4.3. Logging Requirements
1.1.4.5. Certificate Authorities
1.1.5.
Authentication
1.1.5.1. Authentication Factors
1.1.5.1.1. Something You Know
1.1.5.1.2. Something You Have
1.1.5.1.3. Something You Are
1.1.5.2. Password-based Authentication
1.1.5.2.1. Password Policies
1.1.5.2.2. Password Storage
1.1.5.2.3. Password Attacks
1.1.5.3. Multi-factor Authentication
1.1.5.3.1. Hardware Tokens
1.1.5.3.2. Software Tokens
1.1.5.3.3. SMS-based Authentication
1.1.5.4. Biometric Authentication
1.1.5.4.1. Fingerprint Recognition
1.1.5.4.2. Facial Recognition
1.1.5.5. Certificate-based Authentication
1.1.6.
Authorization
1.1.6.1. Authorization Models
1.1.6.2. Role-Based Access Control
1.1.6.3. Attribute-Based Access Control
1.1.6.4. Access Control Lists
1.1.6.5. Principle of Least Privilege
1.1.6.6. Separation of Duties
1.2.
Risk Management Fundamentals
1.2.1.
Risk Assessment Methodologies
1.2.3.
Vulnerability Management
1.2.4.
Risk Mitigation Strategies
1.2.5.
Compliance Frameworks
1.2.5.2. NIST Cybersecurity Framework
1.3.
Networking Fundamentals for Security
1.3.1.
Network Architecture Concepts
1.3.1.1. Client-Server Model
1.3.1.2. Peer-to-Peer Networks
1.3.1.3. Network Topologies
1.3.2.
The OSI Model
1.3.2.1. Physical Layer Security
1.3.2.2. Data Link Layer Security
1.3.2.3. Network Layer Security
1.3.2.4. Transport Layer Security
1.3.2.5. Session Layer Security
1.3.2.6. Presentation Layer Security
1.3.2.7. Application Layer Security
1.3.3.
The TCP/IP Model
1.3.3.1. Network Interface Layer
1.3.3.4. Application Layer
1.3.4.
IP Addressing and Subnetting
1.3.4.1.1. Address Classes
1.3.4.1.4. Private Address Ranges
1.3.4.2.1. Address Structure
1.3.4.2.3. Stateless Address Autoconfiguration
1.3.4.2.4. IPv6 Security Features
1.3.5.
Core Network Protocols
1.3.5.1.1. Connection Establishment
1.3.5.1.3. Connection Termination
1.3.5.1.5. Sequence Numbers
1.3.5.2.1. Connectionless Communication
1.3.5.2.2. UDP Header Structure
1.3.5.3.1. Error Reporting
1.3.5.3.2. Network Diagnostics
1.3.5.3.3. ICMP Message Types
1.3.7.
Switching Concepts
1.3.7.1. MAC Address Tables
1.3.7.2. VLAN Configuration
1.3.7.3. Spanning Tree Protocol
1.3.7.4. Switch Security Features
1.3.8.
Common Application Protocols
1.3.8.1.4. SSL/TLS Implementation
1.3.8.2.1. Name Resolution Process
1.3.8.2.2. DNS Record Types
1.3.8.2.3. DNS Security Extensions
1.3.8.4. File Transfer Protocols
1.3.8.5. Remote Access Protocols
1.4.
Common Threat Actors and Attack Vectors
1.4.1.
Threat Actor Categories
1.4.1.4. Nation-State Actors
1.4.2.
Attack Motivations
1.4.2.2. Political Objectives
1.4.2.5. Personal Vendetta
1.4.3.
Attack Vectors
1.4.3.1. Network-based Attacks
1.4.3.2. Web-based Attacks
1.4.3.3. Email-based Attacks
1.4.3.5. Social Engineering
1.4.4.
Advanced Persistent Threats
1.4.4.1. APT Characteristics
1.4.4.3. Attribution Challenges