Arman transferred some money to his friend's account using a net banking service. After a few hours, his friend informed him that he hadn't received the money yet. Arman logged on to the bank's website to investigate and discovered that the amount had been transferred to an unknown account instead. The bank, upon receiving Arman's complaint, discovered that someone had established a station between Arman's and the bank server's communication system. The station intercepted the communication and inserted another account number replacing his friend's account number. What is
such an attack called?
The scenario described is a classic example of a Man-in-the-Middle (MitM) attack. In this type of cyberattack, the attacker secretly intercepts and possibly alters the communication between two parties who believe they are directly communicating with each other. The attacker has inserted themselves between the two parties, in this case, Arman and the bank's server, and has intercepted the communication to redirect the funds to a different account. This type of attack can occur in various forms, such as eavesdropping on or altering the communication over an insecure network service, but it is characterized by the attacker's ability to intercept and modify the data being exchanged without either legitimate party noticing.
Which antenna's characteristic refer to the calculation of radiated in a particular direction. It is generally the ratio of radiation intensity in a given direction to the average radiation intensity?
Directivity of an antenna refers to the measure of how concentrated the radiation emitted is in a single direction. It is defined as the ratio of the radiation intensity in a given direction from the antenna to the radiation intensity averaged over all directions. In simpler terms, it is the calculation of radiated power in a particular direction compared to the average radiated power in all directions. This characteristic is crucial for antennas designed to transmit or receive signals in a specific direction, making it an essential parameter for many communication systems.
What is the correct order of activities that a IDS is supposed to attempt in order to detect an intrusion?
An Intrusion Detection System (IDS) is designed to monitor network or system activities for malicious actions or policy violations. The correct order of activities that an IDS follows to detect an intrusion starts withIntrusion Monitoring, where it observes the network traffic or system events. Following this,Intrusion Detectiontakes place, where the IDS analyzes the monitored data to identify potential security breaches. Once a potential intrusion is detected, theResponsemechanism is activated to address the intrusion, which may include alerts or automatic countermeasures. Finally,Preventionis applied to improve the system's defenses against future intrusions based on the detected patterns and responses.
A network designer needs to submit a proposal for a company, which has just published a web
portal for its clients on the internet. Such a server needs to be isolated from the internal network,
placing itself in a DMZ. Faced with this need, the designer will present a proposal for a firewall with
three interfaces, one for the internet network, another for the DMZ server farm and another for the
internal network. What kind of topology will the designer propose?
The topology that the network designer will propose is known as a screened subnet. This topology involves the use of two or more firewalls to create a network segment referred to as a demilitarized zone (DMZ). The DMZ acts as a buffer zone between the public internet and the internal network. It contains the public-facing servers, such as the web portal mentioned, which is isolated from the internal network for added security. The screened subnet topology typically includes a firewall at the network's edge connected to the internet, another firewall separating the DMZ from the internal network, and the DMZ itself. This setup allows for strict control of traffic between the internet, the DMZ, and the internal network, providing an additional layer of security.
How does Windows' in-built security component, AppLocker, whitelist applications?
AppLocker whitelists applications by creating rules that specify which files are allowed to run. One of the primary methods for specifying these rules is through the use of Path Rules. Path Rules allow administrators to specify an allowed file or folder path, and any application within that path is permitted to run. This method is particularly useful for allowing applications from a known directory while blocking others that are not explicitly approved.
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