Incident Detection: A Comprehensive Guide for Cybersecurity Professionals

Question 1

How does threat intelligence enhance incident detection? Explain the benefits of using threat intelligence sources for proactive detection and prevention of security incidents.

Accepted Answer

Threat intelligence provides real-time information on potential threats, allowing organizations to proactively identify and prevent attacks.

Answer

Threat intelligence is only useful for analyzing incidents after they occur, helping to determine their root cause.

Answer

Threat intelligence sources only use publicly available information, making them ineffective for incident detection.

Answer

Threat intelligence makes traditional intrusion detection systems unnecessary.

Question 2

Which of the following tools is primarily used for detecting network intrusions by analyzing network traffic for suspicious patterns?

Accepted Answer

Intrusion Detection System (IDS)

Answer

Security Information and Event Management (SIEM) system, which primarily aggregates and analyzes security logs

Answer

Antivirus software, which primarily detects malware on endpoints

Answer

Firewall, which primarily blocks unauthorized access to a network

Question 3

What is the primary purpose of a security incident response plan?

Accepted Answer

To guide organizations in responding to security breaches, outlining steps to contain, mitigate, and recover from incidents

Answer

To identify potential security vulnerabilities, which is a separate step in cybersecurity risk management

Answer

To prevent security incidents from occurring, which is not the sole purpose of an incident response plan

Question 4

Which of the following is a key element of incident detection best practices?

Accepted Answer

Continuous monitoring, which involves ongoing surveillance of systems and networks for suspicious activity

Answer

Ignoring low-priority alerts, which can lead to missed threats

Answer

Only responding to incidents that cause significant business disruption, which is a reactive approach

Answer

Neglecting to update detection mechanisms, which is not a best practice

Question 5

What is the main objective of incident triage?

Accepted Answer

Prioritizing incidents based on their severity and urgency, ensuring that critical incidents are addressed promptly

Answer

Containing and mitigating the impact of an incident, which is a subsequent step in incident response

Answer

Determining the root cause of an incident, which is part of incident investigation

Question 6

What is the role of threat intelligence in incident detection?

Accepted Answer

Providing information on known threats and vulnerabilities, enabling security teams to anticipate and detect potential attacks

Answer

Deploying security controls to protect against threats, which is a preventive measure rather than detection

Answer

Collecting and analyzing incident data, which is a separate step in incident response

Question 7

What is the importance of incident detection in cybersecurity?

Accepted Answer

It enables organizations to respond quickly to security breaches and minimize their impact, reducing potential damage and loss

Answer

It eliminates the need for other cybersecurity measures, which is an incorrect assumption

Answer

It guarantees the prevention of all security incidents, which is an unrealistic expectation

Question 8

Which of the following is NOT a benefit of automating incident detection?

Accepted Answer

Improving detection accuracy, as automation can introduce false positives and negatives

Answer

Lowering the cost of incident detection, as automation can reduce the need for manual labor

Answer

Reducing response times, as automation can trigger alerts and initiate response actions faster

Answer

Freeing up security analysts for other tasks, as automation can handle repetitive tasks

Question 9

During an incident response, which action should be avoided?

Accepted Answer

Responding immediately without proper analysis

Answer

Establishing a predetermined incident response plan

Answer

Documenting all incident-related activities

Answer

Assigning roles and responsibilities to the incident response team

Question 10

In incident detection, which tool is commonly used to monitor security events?

Accepted Answer

Syslog

Answer

Web Server

Answer

Database Management System

Answer

Spreadsheet

Question 11

Which of the following is a fundamental technique used for detecting security incidents?

Accepted Answer

Intrusion Detection Systems (IDS)

Answer

Antivirus software

Answer

Network firewalls

Answer

Data Loss Prevention (DLP)

Question 12

What is the primary objective of signature-based detection in incident response?

Accepted Answer

Identifying known malicious patterns in network traffic

Answer

Generating alerts for security events

Answer

Detecting novel or unknown threats

Answer

Correlating security-related events

Question 13

Which of the following is a key advantage of employing anomaly-based detection systems?

Accepted Answer

Detecting previously unseen or zero-day threats

Answer

Increased detection speed

Answer

Reduced resource consumption

Answer

Lower rate of false positives

Question 14

Which of the following is a recommended best practice for optimizing incident detection effectiveness?

Accepted Answer

Establishing clear detection thresholds to minimize false positives

Answer

Ignoring security alerts from unknown sources

Answer

Disabling IDS to reduce noise

Question 15

What is the purpose of a detection playbook in incident response?

Accepted Answer

Providing step-by-step guidance to incident responders based on predefined detection procedures

Answer

Storing historical incident data for analysis

Answer

Training incident response team members on detection techniques

Question 16

Which of the following is a fundamental principle of a comprehensive incident detection strategy?

Accepted Answer

Continuous monitoring and analysis of security-related data

Answer

Prioritizing detection of only high-risk vulnerabilities

Answer

Conducting incident detection only during specific hours

Answer

Relying solely on third-party detection services

Question 17

How does threat intelligence contribute to enhancing incident detection capabilities?

Accepted Answer

Providing insights into potential threats, enabling more targeted and proactive detection mechanisms

Answer

Eliminating the need for regular security updates and patches

Answer

Providing forensic analysis of past security incidents

Question 18

Which of the following is a key principle of incident detection?

Accepted Answer

Early detection facilitates a prompt and effective response.

Answer

Detection efforts should focus solely on high-priority incidents.

Answer

Prioritization of incidents is not essential.

Answer

Incident detection is an optional aspect of cybersecurity.

Question 19

What is the primary objective of incident detection?

Accepted Answer

To identify, analyze, and prioritize security events effectively.

Answer

To ascertain the severity of security breaches solely.

Answer

To gather evidence exclusively for legal proceedings.

Question 20

Which of the following is a widely employed incident detection technique?

Accepted Answer

Signature-based detection.

Answer

Employee training programs.

Answer

Simulated phishing attacks.

Question 21

What is the fundamental distinction between intrusion detection and incident detection?

Accepted Answer

Intrusion detection focuses on identifying unauthorized access attempts, while incident detection encompasses a wider scope of security event analysis.

Answer

Incident detection is more proactive than intrusion detection.

Question 22

Which of the following is considered a best practice for incident detection?

Accepted Answer

Continuous monitoring of networks and systems.

Answer

Assigning the same priority level to all incidents.

Answer

Sole reliance on external security vendors for detection.

Answer

Disregarding low-level security events.

Question 23

What is the primary purpose of an incident detection plan?

Accepted Answer

To establish a structured and coordinated approach to incident detection and response.

Answer

To identify individuals responsible for security breaches.

Answer

To solely fulfill regulatory compliance requirements.

Question 24

What is the role of machine learning in incident detection?

Accepted Answer

Automating the detection and analysis of security events.

Answer

Generating excessive false positives that hinder analysts.

Answer

Replacing human analysts entirely in incident response.

Question 25

Which of the following is a primary challenge in incident detection within cybersecurity?

Accepted Answer

Distinguishing between benign and malicious events

Answer

Collecting sufficient data

Answer

Responding to incidents promptly

Answer

Monitoring all system activities

Question 26

Which incident detection method involves analyzing logs and system events for atypical patterns to identify suspicious activity?

Accepted Answer

Anomaly-based detection

Answer

Heuristic-based detection

Answer

Signature-based detection

Answer

Behavioral analysis

Question 27

What is the primary purpose of a Security Information and Event Management (SIEM) system in the context of incident detection?

Accepted Answer

Centralize and correlate relevant security data from various sources to facilitate analysis and response

Answer

Detect and automatically prevent security breaches without human intervention

Answer

Generate comprehensive security reports

Question 28

Which best practice should be considered when deploying intrusion detection systems (IDSs) for effective incident detection?

Accepted Answer

Strategically position IDS sensors at critical network points to monitor and analyze traffic

Answer

Solely rely on open-source IDS tools due to their cost-effectiveness

Answer

Configure IDS sensors to automatically block any suspicious traffic without further investigation

Answer

Monitor all traffic on the network, regardless of its volume or relevance

Question 29

What is the primary goal of utilizing threat intelligence in incident detection?

Accepted Answer

Provide valuable context and insights into potential threats, enabling proactive security measures

Answer

Detect incidents in real-time, eliminating the need for human analysis

Answer

Correlate security events in isolation, without considering external threat information

Question 30

Which of the following is a common source of false positives in incident detection systems?

Accepted Answer

Legitimate system maintenance or administrative activities that may trigger security alerts

Answer

Phishing emails that successfully bypass spam filters

Answer

Malware attacks that remain undetected due to sophisticated evasion techniques

Answer

Unauthorized access attempts that evade detection mechanisms

Question 31

What is the recommended approach for responding to security incidents to minimize their impact and consequences?

Accepted Answer

Follow a well-defined incident response plan that outlines clear procedures and responsibilities

Answer

Ignore low-priority incidents as they pose minimal risk to the organization

Answer

Delegate incident response solely to external vendors, absolving internal responsibility

Answer

Respond immediately to all incidents without proper assessment or planning

Question 32

Which of the following elements is critical for an effective incident response plan?

Accepted Answer

Establishing clear communication and coordination channels among all relevant stakeholders

Answer

Allocating an unlimited budget for incident response, regardless of its potential impact

Answer

Ensuring access to all necessary technologies without considering cost or availability

Answer

Involving only senior management in incident response, excluding technical experts

Question 33

What is the primary objective of incident containment in cybersecurity?

Accepted Answer

To limit the impact and prevent the spread of an incident, minimizing potential damage

Answer

To publicly disclose the incident to demonstrate transparency and accountability

Answer

To identify the root cause of the incident and assign blame to responsible parties

Answer

To restore lost data and systems to their original state as quickly as possible

Question 34

Which of the following benefits can be derived from conducting thorough post-incident reviews?

Accepted Answer

Identifying areas for improvement in incident response processes and preventing similar incidents in the future

Answer

Avoiding legal liability by documenting all actions taken during the incident response

Answer

Punishing individuals deemed responsible for the incident, regardless of their level of involvement

Question 35

What is the primary function of a security information and event management (SIEM) system?

Accepted Answer

Centralizing and analyzing security logs from various sources.

Answer

Providing real-time network traffic visibility.

Answer

Managing user access and permissions.

Answer

Automating threat detection and response.

Question 36

What is the main role of threat intelligence in incident detection?

Accepted Answer

Providing context and prioritizing alerts.

Answer

Preventing incidents from occurring.

Answer

Detecting specific threats missed by traditional methods.

Answer

Automating the incident investigation process.

Question 37

Which of the following is a primary method used for detecting security incidents?

Accepted Answer

Signature-based detection

Answer

Social engineering awareness training

Answer

Penetration testing

Answer

Vulnerability scanning

Question 38

What is a primary advantage of deploying host-based intrusion detection systems (IDS)?

Accepted Answer

Detecting suspicious activities within individual devices.

Answer

Providing centralized monitoring of network traffic.

Answer

Effectively detecting zero-day vulnerabilities.

Question 39

Which of the following is NOT a type of anomaly detection technique?

Accepted Answer

Signature-based detection

Answer

Machine learning

Answer

Statistical analysis

Question 40

When selecting a log management tool for incident detection, which factor is crucial to consider?

Accepted Answer

Ability to filter and prioritize events based on severity.

Answer

Cost of the tool

Answer

Maximum number of events stored

Question 41

Which of the following is a recommended practice for effective incident detection?

Accepted Answer

Establish a clear escalation procedure for security alerts.

Answer

Ignoring low-priority alerts

Answer

Responding to all alerts manually

Question 42

What is the primary purpose of a Security Information and Event Management (SIEM) system?

Accepted Answer

Correlating and analyzing security events from multiple sources.

Answer

Providing remote access to security personnel

Answer

Detecting and blocking malware

Question 43

What is the key difference between an intrusion detection system (IDS) and an intrusion prevention system (IPS)?

Accepted Answer

IPS actively blocks threats while IDS only alerts about them.

Answer

IDS is more expensive than IPS

Answer

IPS requires more maintenance than IDS

Question 44

Which tool is commonly utilized for analyzing network traffic to identify security threats?

Accepted Answer

Network traffic analyzer

Answer

Firewall

Answer

Virus scanner

Answer

Penetration testing tool

Question 45

Which type of incorrect alert is commonly encountered in incident detection?

Accepted Answer

Legitimate network activities being误认为攻击.

Answer

Malware being detected as harmless

Answer

Security alerts not being triggered when an attack occurs

Question 46

Which of the following is NOT a common source of security incident logs?

Accepted Answer

Marketing automation platforms

Answer

Firewalls

Answer

Web servers

Answer

Intrusion Detection Systems (IDS)

Question 47

What does a SIEM system primarily do?

Accepted Answer

Aggregates and correlates security data from multiple sources.

Answer

Provides endpoint protection against malware.

Answer

Encrypts sensitive data at rest and in transit.

Question 48

Which incident detection method relies on comparing current activity against a known baseline?

Accepted Answer

Anomaly-based detection

Answer

Heuristic analysis

Answer

Signature-based detection

Answer

Threat intelligence

Question 49

A sudden increase in network traffic originating from multiple geographical locations could indicate which type of attack?

Accepted Answer

Distributed Denial of Service (DDoS)

Answer

Cross-site scripting (XSS)

Answer

SQL injection

Answer

Phishing

Question 50

What is the primary purpose of a honeypot in cybersecurity?

Accepted Answer

To attract and analyze malicious activity.

Answer

To filter spam emails.

Answer

To store sensitive data securely.

Answer

To manage user passwords.

Question 51

Which of the following is a critical step in the incident response lifecycle?

Accepted Answer

Containment and eradication

Answer

Penetration testing

Answer

Data encryption

Answer

Security awareness training

Question 52

What is a false positive in the context of incident detection?

Accepted Answer

An alert triggered by benign activity.

Answer

A system vulnerability exploited by an attacker.

Answer

A successful phishing attempt.

Answer

A missed malicious activity.

Question 53

Which of the following can help improve the accuracy of incident detection systems?

Accepted Answer

Regularly updating security rules and signatures.

Answer

Using default security configurations.

Answer

Disabling automatic software updates.

Answer

Ignoring security alerts from unknown sources.

Question 54

What is the role of threat intelligence in incident detection?

Accepted Answer

Provides context and insights into emerging threats.

Answer

Guarantees complete protection against all cyberattacks.

Answer

Replaces the need for traditional security controls.

Question 55

Which of the following is a common indicator of compromise (IOC) that might signal a security incident?

Accepted Answer

Unexpected outbound network connections to known malicious domains.

Answer

Strong password policies enforced across the organization.

Answer

Regular system updates and patching.