CompTIA CySA+
1 Threat Management
1-1 Threat Landscape
1-1 1 Identifying Threat Actors
1-1 2 Understanding Threat Vectors
1-1 3 Threat Intelligence Sources
1-1 4 Threat Intelligence Lifecycle
1-2 Threat Hunting
1-2 1 Threat Hunting Concepts
1-2 2 Threat Hunting Techniques
1-2 3 Threat Hunting Tools
1-3 Threat Modeling
1-3 1 Threat Modeling Concepts
1-3 2 Threat Modeling Techniques
1-3 3 Threat Modeling Tools
1-4 Threat Mitigation
1-4 1 Threat Mitigation Strategies
1-4 2 Threat Mitigation Techniques
1-4 3 Threat Mitigation Tools
2 Vulnerability Management
2-1 Vulnerability Identification
2-1 1 Vulnerability Scanning
2-1 2 Vulnerability Assessment
2-1 3 Vulnerability Identification Tools
2-2 Vulnerability Analysis
2-2 1 Vulnerability Analysis Techniques
2-2 2 Vulnerability Analysis Tools
2-3 Vulnerability Prioritization
2-3 1 Vulnerability Prioritization Techniques
2-3 2 Vulnerability Prioritization Tools
2-4 Vulnerability Remediation
2-4 1 Vulnerability Remediation Techniques
2-4 2 Vulnerability Remediation Tools
3 Cyber Incident Response
3-1 Incident Response Planning
3-1 1 Incident Response Plan Development
3-1 2 Incident Response Team Roles
3-1 3 Incident Response Plan Testing
3-2 Incident Detection
3-2 1 Incident Detection Techniques
3-2 2 Incident Detection Tools
3-3 Incident Analysis
3-3 1 Incident Analysis Techniques
3-3 2 Incident Analysis Tools
3-4 Incident Response
3-4 1 Incident Response Techniques
3-4 2 Incident Response Tools
3-5 Incident Recovery
3-5 1 Incident Recovery Techniques
3-5 2 Incident Recovery Tools
4 Security Architecture and Tool Sets
4-1 Security Controls
4-1 1 Security Control Types
4-1 2 Security Control Implementation
4-1 3 Security Control Monitoring
4-2 Security Tools
4-2 1 Security Tool Categories
4-2 2 Security Tool Implementation
4-2 3 Security Tool Monitoring
4-3 Security Architecture
4-3 1 Security Architecture Concepts
4-3 2 Security Architecture Design
4-3 3 Security Architecture Implementation
5 Compliance and Assessment
5-1 Compliance Requirements
5-1 1 Compliance Standards
5-1 2 Compliance Audits
5-1 3 Compliance Reporting
5-2 Assessment Techniques
5-2 1 Assessment Methodologies
5-2 2 Assessment Tools
5-2 3 Assessment Reporting
5-3 Risk Management
5-3 1 Risk Management Concepts
5-3 2 Risk Management Techniques
5-3 3 Risk Management Tools
6 Software Development Security
6-1 Secure Coding Practices
6-1 1 Secure Coding Principles
6-1 2 Secure Coding Techniques
6-1 3 Secure Coding Tools
6-2 Software Development Lifecycle
6-2 1 SDLC Phases
6-2 2 SDLC Security Practices
6-2 3 SDLC Security Tools
6-3 Software Testing
6-3 1 Software Testing Techniques
6-3 2 Software Testing Tools
6-3 3 Software Testing Security
7 Security Operations
7-1 Security Operations Concepts
7-1 1 Security Operations Roles
7-1 2 Security Operations Processes
7-1 3 Security Operations Tools
7-2 Security Monitoring
7-2 1 Security Monitoring Techniques
7-2 2 Security Monitoring Tools
7-3 Security Incident Management
7-3 1 Incident Management Techniques
7-3 2 Incident Management Tools
7-4 Security Awareness Training
7-4 1 Security Awareness Training Concepts
7-4 2 Security Awareness Training Techniques
7-4 3 Security Awareness Training Tools
3-2 1 Incident Detection Techniques

3-2 1 Incident Detection Techniques

Incident detection techniques are essential for identifying and responding to security incidents in real-time. The 3-2 1 approach is a structured method that focuses on three primary detection methods, two secondary detection methods, and one fallback detection method. This layered approach ensures comprehensive coverage and enhances the likelihood of early incident detection.

Key Concepts

1. Three Primary Detection Methods

The three primary detection methods are the core techniques used to identify security incidents. These methods are typically automated and provide real-time monitoring and alerting capabilities.

a. Intrusion Detection Systems (IDS)

IDS monitors network traffic and system activities for suspicious patterns that may indicate a security breach. Network-based IDS (NIDS) monitors traffic on the network, while Host-based IDS (HIDS) monitors activities on individual hosts.

b. Security Information and Event Management (SIEM)

SIEM systems collect and analyze security events from various sources across the organization. They provide real-time analysis of security alerts generated by network hardware and applications, helping to correlate events and identify potential threats.

c. Log Management

Log management involves collecting, analyzing, and archiving logs from various systems and applications. Logs provide detailed records of system activities, which can be analyzed to detect anomalies and potential security incidents.

2. Two Secondary Detection Methods

The two secondary detection methods complement the primary methods by providing additional layers of detection. These methods are often manual or semi-automated and focus on specific areas of concern.

a. Vulnerability Scanning

Vulnerability scanning involves using automated tools to scan systems and applications for known security vulnerabilities. Regular scans help identify and remediate weaknesses before they can be exploited by attackers.

b. Penetration Testing

Penetration testing, or pen testing, involves simulating cyber attacks on a system to identify and exploit vulnerabilities. Pen testers use the same techniques as real attackers, providing a more realistic assessment of the system's security posture.

3. One Fallback Detection Method

The fallback detection method is a contingency plan that comes into play if the primary and secondary methods fail. This method is typically manual and relies on human intervention to detect and respond to incidents.

a. Incident Response Team (IRT)

The IRT is a group of trained professionals responsible for detecting, analyzing, and responding to security incidents. The team conducts regular reviews of security logs, incident reports, and other relevant data to identify potential threats that may have been missed by automated systems.

Examples and Analogies

Consider a bank as an example of an organization that needs to detect security incidents. The three primary detection methods are like the bank's surveillance cameras, alarm systems, and transaction monitoring tools. The two secondary detection methods are like the bank's internal audits and external security assessments. The one fallback detection method is like the bank's security personnel who are always on alert and ready to respond to any unusual activities.

By implementing the 3-2 1 incident detection techniques, organizations can create a robust security framework that maximizes the chances of early incident detection and effective response.