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https://docs.microsoft.com/en-us/troubleshoot/windows-server/performance/windo ws-registry-advanced-users

Traffic mirroring is a technique that copies the traffic from a source port or VLAN to a destination port or VLAN, where it can be analyzed by a security device or tool. Traffic mirroring does not affect the original traffic flow and does not introduce any latency or modification to the packets. Inline traffic interrogation is a technique that forwards the traffic directly to the security device or tool, where it can be inspected and modified before being sent to the destination. Inline traffic interrogation can introduce latency and affect the performance of the network. References:

Understanding Cisco Cybersecurity Operations Fundamentals (CBROPS) - Cisco, Module 2: Security Monitoring, Lesson 2.2: Network Security Monitoring Tools

200-201 CBROPS - Cisco, Exam Topics, 2.0 Security Monitoring, 2.2 Describe the impact of various technologies on security monitoring

Cisco Certified CyberOps Associate Overview - Cisco Learning Network, Videos, 2.2 Describe the impact of various technologies on security monitoring

The main difference between inline traffic interrogation (TAPS) and traffic mirroring (SPAN) lies in how they handle network traffic for analysis purposes. TAPS, or Test Access Points, are hardware devices that create a copy of the traffic between two network points without altering the data. This means TAPS can transmit both send and receive data streams simultaneously on separate dedicated channels, ensuring all data, including physical layer errors, is received by the monitoring or security device in real-time. On the other hand, SPAN, or Switch Port Analyzer, is a feature that duplicates network packets seen on one port to another port for analysis. However, SPAN ports can filter out physical layer errors, which may limit the types of analyses that can be performed as some errors will not be represented in the mirrored traffic.

Integrity is a metric in CVSS that measures the impact of a vulnerability on the trustworthiness and veracity of the data or information in a system. A vulnerability that affects the integrity of a system can allow an attacker to modify, delete, or corrupt the data or information without authorization. An example of such a vulnerability is a bank account number tampering attack, where an attacker changes the destination bank account number of a transaction to redirect the funds to their own account. References: Understanding Cisco Cybersecurity Operations Fundamentals (CBROPS) - Cisco, page 2-17; 200-201 CBROPS - Cisco, exam topic 1.3.c

The lack of data visibility needed to detect the attack is caused by the threat actor gaining access to the system by known credentials. This means that the threat actor either obtained the employee’s username and password through phishing, social engineering, or other means, or used a compromised account that had legitimate access to the system. This would explain why there were no suspicious logs, alerts, or failed login attempts, as the threat actor appeared to be a normal user. References: https://learningnetworkstore.cisco.com/on-demand-e-learning/understanding-cisco-cybersecurity-operations-fundamentals-cbrops-v1-0/CSCU-LP-CBROPS-V1-028093.html (Module 2, Lesson 2.1.2)

 TOR, or The Onion Router, is designed to conceal a user’s location and usage from anyone conducting network surveillance or traffic analysis. Using TOR makes it more difficult to trace internet activity, including “visits to Web sites, online posts, instant messages, and other communication forms,” back to the user1. It is intended to protect the personal privacy of users, as well as their freedom and ability to conduct confidential communication by keeping their internet activities unmonitored. Within an organization, the use of TOR can decrease visibility into data traffic because it encrypts the data multiple times and routes it through a series of servers operated by volunteers around the globe. This makes network monitoring and data visibility challenging for cybersecurity professionals within the organization. References: Understanding Cisco Cybersecurity Operations Fundamentals (CBROPS)

 Inline mode is used for monitoring the traffic path and can examine any traffic at wire speed. This means that it can analyze data packets as they pass through in real-time. On the other hand, tap mode is used for monitoring traffic as it traverses across the network but does not have the capability to examine data at wire speed like inline mode. References: The information can be referenced from Cisco’s official documentation on cybersecurity operations and fundamentals.

Social engineering is the practice of manipulating or deceiving people into performing actions or divulging information that can compromise the security of the organization. Asking questions about the company’s user account format and password complexity at a party is an example of social engineering, as the guest may be trying to gather information that can be used to launch a cyberattack. References := Cisco Cybersecurity Operations Fundamentals - Module 6: Security Incident Investigations

 In the context of phishing emails, the threat actor is the entity that is responsible for initiating the threat, which in this case is the sender of the phishing emails. The sender is impersonating the HR department to deceive the receiver into believing that the emails are legitimate