Deck4 Flashcards
A technology company receives threat intelligence indicating that a competitor has been posting false information about their products on social media platforms. How can the acquired threat intelligence information be best utilized in responding to this social media threat?
A. Share the information with industry associations to raise awareness.
B. Focus on legal actions against the competitor for defamation.
C. Use the information to create custom detection rules for identifying false claims.
D. Engage in public debates on social media to counter the false information.
C. Use the information to create custom detection rules for identifying false claims.
What does the syslog entry from firewall1 at Dec 7 2023 11:40:12 suggest?
A. A misconfiguration in NAT rules.
B. A successful NAT reverse path operation.
C. An unsuccessful attempt to establish a connection from outside to inside.
D. A denied connection due to an access-group policy.
A. A misconfiguration in NAT rules.
The syslog entry from firewall1 at Dec 7 2023 11:40:12 suggests a NAT reverse path failure. The message “%ASA-5-305013: Asymmetric NAT rules matched for forward and reverse flows” indicates a misconfiguration in the NAT rules, resulting in the denial of the connection from outside to inside.
A security team is implementing automation to improve threat detection and response. To ensure effective coordination, they establish a cross-functional team involving network engineers, analysts, and system administrators. What is the primary benefit of this approach?
A. Reduced need for user awareness training
B. Enhanced threat intelligence sharing
C. Faster incident response
D. Improved asset management
C. Faster incident response
Establishing a cross-functional team for automation coordination leads to faster incident response. Different expertise areas working together can quickly identify and address security incidents.
A security team is investigating a potentially malicious IP address that has been identified in their network logs. They want to check if the IP address is associated with known threats. Which specific functionality of VirusTotal should they use to query information about the IP address?
A. IP address scan
B. Threat intelligence feed
C. URL scan
D. IP address lookup
D. IP address lookup
To query information about an IP address in VirusTotal, the security team should use the “IP address lookup” feature. This provides information about the reputation and associated threats of the queried IP address.
You are a senior cybersecurity analyst responsible for monitoring and responding to security incidents on SERVER01. The syslog entries shown here are part of a log file that spans several hours. Your task is to identify the recommended actions for the event logged at 8:20. What immediate steps should be taken?
A. Quarantine the affected file, conduct a thorough malware analysis, and implement file upload restrictions.
B. Shut down the affected application server to prevent further payload execution.
C. Restore the affected file from backup and update antivirus signatures.
D. Increase monitoring on file uploads without taking immediate action.
A. Quarantine the affected file, conduct a thorough malware analysis, and implement file upload restrictions.
Quarantining the affected file is the first step to prevent the execution of the malicious payload. Conducting a thorough malware analysis on the quarantined file is essential to understand the nature of the payload, identify potential threats, and develop effective countermeasures. Implementing file upload restrictions, such as size limitations and file type filtering, adds an extra layer of defense to mitigate the risk of future malicious uploads.
The security team of an major news agency discovered a phishing email had been sent to several members of their staff. Reviewing the email access log shown here, which of the accounts was MOST likely compromised?
A. ALICE
B. JOHN
C. FRANCIS
D. MICHAEL
D. MICHAEL
Michael’s account was successfully accessed in England and China within a 90 minute window. There is no way Michael could have been in these two geographical locations within that timeframe (impossible travel time). Other of such attempts with the accounts of other staff were denied. Michael’s account was therefore successfully compromised.
You are responsible for the security of certain internal servers. What risk does Rule 1 pose in the given firewall rules, and how can it be mitigated?
A. Risk: Exposing the entire inside network to potential web-based attacks. Mitigation: Implementing an Intrusion Prevention System (IPS) to inspect and filter web traffic.
B. Risk: Allowing unrestricted outbound web traffic. Mitigation: Enforcing URL filtering at the proxy level to control and monitor web access.
C. Risk: Facilitating lateral movement within the inside network. Mitigation: Implementing VLAN segmentation to isolate different parts of the network.
D. Risk: Exposing internal servers to potential exploitation. Mitigation: Implementing host-based firewalls on internal servers to control incoming traffic.
A. Risk: Exposing the entire inside network to potential web-based attacks. Mitigation: Implementing an Intrusion Prevention System (IPS) to inspect and filter web traffic.
Rule 1 permits TCP traffic from 192.168.1.0/24 (inside) to any destination on ports 80 and 443, potentially exposing the entire inside network to web-based attacks. To mitigate this risk, implementing an Intrusion Prevention System (IPS) to inspect and filter web traffic can provide an additional layer of security.
A security analyst is tasked with prioritizing patching efforts for a large corporate network. The analyst discovers a critical vulnerability with an available patch, but applying the patch requires restarting essential servers during business hours. What should be the analyst’s PRIMARY consideration when deciding the timing of the patch deployment?
A. The urgency of addressing the critical vulnerability.
B. The historical frequency of attacks targeting similar vulnerabilities.
C. The ease of applying the patch to minimize disruption.
D. The potential business impact of restarting servers during business hours.
D. The potential business impact of restarting servers during business hours.
When deciding the timing of patch deployment, the potential business impact should be the primary consideration. Balancing the urgency of addressing the critical vulnerability with the need to minimize disruption to business operations is crucial. While urgency and ease of patching are important, understanding the potential impact on business operations guides the decision-making process.
A security team discovers a vulnerability in an internal web application used for employee training. The vulnerability could potentially allow employees to gain unauthorized access to training materials for courses they are not enrolled in. How should the team prioritize addressing this vulnerability?
A. Prioritize based on the potential impact on the confidentiality of training materials.
B. Downplay the significance due to the internal nature of the web application and focus on external-facing systems.
C. Consult with the training department to understand the potential risk and assess the application’s access controls.
D. Investigate additional factors, such as the popularity of the web application among employees, before making a decision.
A. Prioritize based on the potential impact on the confidentiality of training materials.
Prioritizing based on the potential impact on the confidentiality of training materials ensures that vulnerabilities posing a threat to internal systems with critical content are addressed promptly. The potential impact on sensitive information takes precedence in the prioritization process.
A cybersecurity team is using webhooks to connect their intrusion detection system (IDS) with the firewall. When the IDS detects suspicious activity, it sends a webhook to the firewall to block the source IP. What is the primary advantage of this integration?
A. Enhanced user awareness training
B. Improved asset management
C. Accelerated threat detection and response
D. Consistent and rapid threat mitigation
D. Consistent and rapid threat mitigation
Integrating the IDS with the firewall using webhooks primarily ensures consistent and rapid threat mitigation by automatically blocking the source IP when suspicious activity is detected.
An organization’s intrusion detection system (IDS) has triggered alerts for multiple internal devices communicating with a known malicious IP address. The devices are sending and receiving data over a non-standard port, and the communication appears to be encrypted. What technique should the security analyst employ to decode the encrypted traffic and determine the commands being sent to the compromised devices?
A. Signature-based detection
B. Anomaly detection
C. Traffic analysis
D. Protocol analysis
D. Protocol analysis
To decode the encrypted traffic and determine the commands being sent to the compromised devices, the security analyst should employ protocol analysis, which involves analyzing the specific communication protocol used in the traffic to understand its nature and content.
An Nmap scan on the network of a company reveals the results shown here. As a cybersecurity analyst, which of these steps would you BEST take to make the network more secure?
A. 22/tcp close
B. 3306/tcp open
C. 23/tcp close
D. 443/tcp close
C. 23/tcp close
Close the Telnet port (Port 23), because Telnet transmits data, including passwords, in an unencrypted format, making it susceptible to interception. Telnet is considered less secure compared to alternatives like SSH.
A security analyst identifies a vulnerability in a server hosting the organization’s public-facing website. The website primarily serves as an informational platform with no direct impact on revenue generation. However, the server also stores sensitive customer feedback forms. How should the analyst prioritize addressing this vulnerability?
A. Prioritize based on the criticality of the public-facing website to the organization’s brand reputation.
B. Downplay the significance due to the lack of direct impact on revenue generation and focus on other critical vulnerabilities.
C. Consult with the marketing team to understand the potential impact on brand perception.
D. Investigate additional factors, such as the historical frequency of similar vulnerabilities in public-facing websites, before prioritizing.
A. Prioritize based on the criticality of the public-facing website to the organization’s brand reputation.
Prioritizing based on the criticality of the public-facing website to the organization’s brand reputation ensures that vulnerabilities with potential impacts on brand perception are addressed promptly. The asset’s value in terms of brand reputation takes precedence in the prioritization process.
A financial institution’s security team identifies a critical vulnerability in the organization’s online banking platform that could result in unauthorized financial transactions. What communication strategy should the team prioritize when informing senior management about this critical vulnerability?
A. Notifying senior management about the identified vulnerability without disclosing technical details.
B. Providing detailed technical information about the vulnerability and potential consequences.
C. Issuing an immediate public statement to inform customers about the identified vulnerability.
D. Collaborating with external security experts to assess and address the critical vulnerability.
B. Providing detailed technical information about the vulnerability and potential consequences.
Senior management needs to understand the seriousness of the situation to make informed decisions on resource allocation, immediate actions, and long-term strategies to address the vulnerability. While it’s important to communicate in a manner that is understandable to non-technical stakeholders, including a summary of technical details and potential consequences is crucial for conveying the urgency and potential impact of the vulnerability. This approach enables senior management to grasp the full scope of the issue, including how the vulnerability might affect the organization’s operations, reputation, and financial stability, and supports a more effective response plan.
What security concern is highlighted by the syslog entry from server2 at Dec 7 2023 11:15:20?
A. A potential Trojan detected on a Windows machine.
B. An attempt to block an incoming connection on port 54321.
C. A denied connection from 192.168.3.20 to 192.168.1.30 on port 54321.
D. A successful block of an outgoing connection on port 54321.
C. A denied connection from 192.168.3.20 to 192.168.1.30 on port 54321.
The syslog entry from server2 at Dec 7 2023 11:15:20 indicates a denied connection from 192.168.3.20 to 192.168.1.30 on port 54321. The UFW BLOCK message suggests that the firewall blocked a TCP connection attempt.
In a cloud infrastructure, a security team discovers that virtual machines are running on outdated hypervisor software. This introduces potential security vulnerabilities. What is the MOST EFFECTIVE measure to mitigate the risks associated with end-of-life or outdated components in the cloud environment?
A. Implementing encrypted communication channels between virtual machines
B. Conducting regular penetration testing
C. Configuring strict firewall rules to limit external access
D. Ensuring timely updates and patching of the hypervisor software
D. Ensuring timely updates and patching of the hypervisor software
To effectively mitigate risks associated with outdated hypervisor software, ensuring timely updates and patching is crucial. This control involves regularly updating the hypervisor software to address known vulnerabilities and enhance security. It directly addresses the root cause of the security risk by keeping the cloud infrastructure’s hypervisor software up-to-date and secure.
You are responsible for the security of an internal network. In reviewing the firewall rules, what potential security concern is addressed by Rule 5?
A. Blocking outbound web traffic from the inside network.
B. Allowing unrestricted access to well-known service ports.
C. Facilitating communication for custom applications.
D. Enforcing egress traffic restrictions for sensitive data.
B. Allowing unrestricted access to well-known service ports.
Rule 5 denies TCP traffic from any source to any destination on ports 1-1023. This denies traffic to well-known service ports, which can be a security measure to prevent communication with services that might have known vulnerabilities or are commonly targeted by attackers.
Your organization has experienced multiple security incidents related to compromised passwords. You are tasked with improving security. What is the primary importance of Passwordless authentication in this incident response scenario?
A. Increasing the complexity of password policies
B. Relying on traditional password recovery methods
C. Reducing the need for user identity verification
D. Enhancing security by reducing the reliance on easily compromised passwords
D. Enhancing security by reducing the reliance on easily compromised passwords
In this scenario, the primary importance of Passwordless authentication is to enhance security by reducing the reliance on easily compromised passwords. Passwordless methods provide more secure alternatives to traditional password-based authentication, reducing the risk of compromised credentials.
During a security assessment, a vulnerability is discovered in a network device that, if exploited, could lead to a complete network outage. The network device is a central component in the organization’s communication infrastructure. How should the security team prioritize addressing this vulnerability?
A. Prioritize based on the potential impact on communication infrastructure availability
B. Downplay the significance due to redundant network devices in place
C. Consult with network administrators for their perspective on prioritization
D. Investigate additional factors, such as the scalability of the network, before prioritizing
A. Prioritize based on the potential impact on communication infrastructure availability
Prioritizing based on the potential impact on communication infrastructure availability ensures that vulnerabilities posing a threat to the availability of critical network components are addressed promptly. The potential impact on essential services takes precedence in the prioritization process.
A security team has implemented a new intrusion detection system (IDS) to enhance network security. During the validation process, the team notices a high number of false positives generated by the IDS. What is a recommended approach to address this issue during validation?
A. Disable the IDS temporarily until false positives can be further investigated.
B. Adjust the IDS configuration to increase sensitivity and reduce false positives.
C. Ignore the false positives and focus on true positive detections for validation.
D. Conduct additional validation tests to confirm the accuracy of the false positives.
B. Adjust the IDS configuration to increase sensitivity and reduce false positives.
A recommended approach is to adjust the IDS configuration to increase sensitivity and reduce false positives. During validation, it’s essential to fine-tune security controls for optimal performance. Adjusting the IDS configuration allows the security team to strike a balance between sensitivity and specificity, minimizing false positives while maintaining effective threat detection.
A security analyst in an information sharing organization notices patterns of cyberattacks targeting members of the group. The analyst decides to conduct threat hunting to investigate further. How does the concept of information sharing organizations impact the threat-hunting process?
A. The analyst should prioritize investigating all cyberattacks targeting group members.
B. Rapidly responding to any cyberattacks is the main focus of threat hunting.
C. Relevancy of the cyberattacks is not important in threat hunting.
D. Ignoring the cyberattacks is often the best approach.
A. The analyst should prioritize investigating all cyberattacks targeting group members.
In the context of information sharing organizations, the threat-hunting process often involves prioritizing the investigation of cyberattacks targeting group members to protect the collective security of the member organizations.
A security analyst discovers a misconfiguration in the firewall that could potentially expose the organization to threats. The analyst decides to conduct threat hunting to investigate further. How does the concept of configurations and misconfigurations impact the threat-hunting process?
A. The analyst should prioritize investigating all misconfigurations identified, regardless of their impact.
B. Rapidly fixing any misconfigurations is the main focus of threat hunting.
C. Relevancy of the misconfiguration to the organization’s security posture is important in threat hunting.
D. Ignoring the misconfiguration and focusing on other security tasks is often the best approach.
C. Relevancy of the misconfiguration to the organization’s security posture is important in threat hunting.
In the context of configurations and misconfigurations, the threat-hunting process focuses on the relevancy of the misconfiguration to the organization’s security posture, ensuring that investigations address potential threats associated with the misconfiguration.