Networks are necessary for everyone to communicate with each other from a long distance. People tend to transfer data instantly to each other through internet to save time. Unfortunately, there are also people who misuse it to perform different kinds of attacks - also known as network attacks in order to gain benefits. According to US Department of Defense (n.d.), network attack is an act of disrupt, deny, degrade, or destroy the data in computers and computer networks, or the computers and networks itself. There are many types of network attacks, but only 3 common attacks that can be found in the book “Seven deadliest network attacks” by Borkin, Kraus, and Prowell (2010), and “CompTIA security+ all-in-one exam guide (Exam SY0-301) third edition” by (Conklin, White, Williams, Davis, & Cothren, 2011). The types of network attacks will be focus on are denial of service attack, war dialing attack, and man-in-the-middle attack (Refer to Figure 1.1 in Appendix 1).
The first type of network attacks is called denial of service (DoS) attack. It is the common network attack because it can be executed easily (Easttom, 2013). According to Convery (2004), DoS attack is an act of intentionally degrade or block the computer network resources of others. The resources may refer to network bandwidth, computing power or operating system data structures (Patrikakis, Masikos, & Zouraraki, 2004). The common goal of the attacker to perform DoS attack is to suspend and interrupt other computer host, make their network resources become unavailable (Borkin, Kraus & Prowell, 2010). This can be achieved by sending mass messages to the target until the target’s resources overwhelmed, where it is the same scenario as road traffic jam in the reality. In a DoS ...
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...ys during the process of exchanging keys of both hosts. Normally the data will be directly transmitted from your network to the network of your friend. However, due to the communication path being intercepted by the attacker, the data will now transfer to the attacker’s network first before transfer to your friend. As the public keys are still in the attack’s hand, the attacker can now decrypt the data sent by both of you, which results the data or the communication detail between you and your friend being stolen (Refer to Figure 2.2 in Appendix 2).
In conclusion, the types of network attacks being focus in the report are denial of service attack, war dialing attack, and man-in-the-middle attack. Although networks are necessary for everyone as it provide many benefits, there are also people who misuse it to perform some unmoral acts toward the other innocent users.
When there is loss of packet, the sender doesn’t wait for the time out and resends the packets immediately using the mechanism of fast recovery and fast retransmit.
and their use. In Committee on Deterring Cyber attacks: Informing Strategies and Developing Options (Ed.), Proceedings of a Workshop on Deterring Cyber attacks: Informing Strategies and Developing Options for U.S. Policy. Washington, D.C.: National Academies Press.
This paper will talk about three different types of terrorism. A background of each type will be provided to understand the motivations and goals. The first type that will be discussed is religious terrorism. The second type that will be discussed is suicide terrorism. The third and last type that will be discussed is nationalist terrorism. Each type of terrorism has distinct differences in their goals, motivations, strategy, use of violence, etc. However, the main focus of this paper will be on the difference between each type’s tactics and/or strategy.
The members of the aforementioned organizations are primarily peaceful and seek redress via nonviolent means. However, as with any highly charged political issue, the issues that drive these organizations to take to the streets has the potential to attract lone-wolf fringe individuals who may use violence to address perceived injustices. The FBI defines lone wolf attackers as “a single individual driven to hateful attacks based on a particular set of beliefs without a larger group’s knowledge or support” and that “most domestic attacks are carried out by lone offenders to promote their own grievances and agendas”. (FBI, 2009) Furthermore, it is difficult to define, categorize, or pattern such individuals, as they can “run the gamut, from hate-filled
The use of hacking to identify weaknesses in computer security has become an increasingly controversial issue in recent years. Awareness of this issue is important, because our ever increasing reliance on technology means that breaches in computer security have the potential to have wide-ranging and devastating consequences to society, worldwide. This essay will begin by clearly defining the term ‘hacking’ and will examine the type of people who hack and for what reasons. There will then follow a discussion of the moral argument on hacking before examining a few brief examples. The essay will then conclude by arguing against the use of hacking as a means of identifying weaknesses in computer security.
The 20 Enemies of the Internet. 1999. Radio Free Europe / Radio Liberty. Feb 20, 2001. <http://www.rferl.org/nca/special/enemies.html>.
attempt to force a network offline and unavailable to its intended users. This process is typically performed by flooding a network with communication requests until the server cannot respond to the traffic, thus making the server go offline and become available. This process is relatively simple to perform to the average person through online programs. Since it is so easy perform, it has become a rising issue simply because anyone has the ability to hack into various servers. One example in recent news of DDoS attacks comes from Riot Games, developer of the popular online multiplayer video game League of Legends. After a month of inconsistency with their server stability and frequent shut downs, Riot Games reported that within the l...
The term “cyber terrorism” refers to the use of the Internet as a medium in which an attack can be launched such as hacking into electrical grids, security systems, and vital information networks. Over the past four decades, cyber terrorists have been using the Internet as an advanced communication tool in which to quickly spread and organize their members and resources. For instance, by using the instantaneous spread of information provided by the Internet, several terrorist’s groups have been able to quickly share information, coordinate attacks, spread propaganda, raise funds, and find new recruits for their cause. Instantaneous and unpredictable, the technological advantages these terrorists have obtained from using the Internet includes
Many nations in the world - the United States, China, Russia, Iran, Germany, and more- use cyber warfare as a method of conducting sabotage and espionage. Nations, such as China and Russia, use espionage in order to prevent their economy and their military technology from falling behind by stealing advanced nations’ technology. Other nations, including Israel and Iran, focus on sabotaging other nations to cripple them, by sending malwares that destroy important data on the system, from advancing their technology and costing them a decent amount of money due to repairs. Another popular cyber attack used, mainly with hacktivist, government- sympathetic groups not owned by the government, and nations less advanced in technology, is Denial-of-service, or DoS. DoS is used to hinder the target’s website and other things that are maintained by computers by making it unavailable to intended users. People argue there are no benefits for cyber warfare due to its potential destructive powers and instant process of destruction. While other people-looking from a different view find that cyber warfare does have its benefits. They argue that an important benefit is that cyber warfare takes place in cyber space meaning that it does not physically harm people. They also argue that cyber warfare draws the awareness of the nation on the ever increasing dangers of cyber warfare and forces the government to set up stronger cyber security to fend off international attacks, which also help protect the government from internal hackers. It also creates more jobs for hackers, who use their knowledge to increase the security instead of harm it. Although cyber warfare produces damaging effects on a nation, in the long run, it crea...
...n. While many people don’t realize it, there is always risk when you use the internet. You must be able to know how to defend yourself against these attacks or you risk losing it all.
Society has become ever-increasingly dependent upon technology, more specifically, computers to conduct personal and business transactions and communications. Consequently, criminals have targeted these systems to conduct information and cyber warfare, which can include politically motivated attacks and to profit through ill-gotten means. In an article written by Koblentz and Mazanec (2013), cyber warfare is the act of disabling an enemy’s ability to use or obtain information, degrade its ability to make decisions, and to command its military forces. Additionally, information warfare is composed of cyber warfare and related to the protection, disruption, destruction, denial, or manipulation of information in order to gain a benefit through the technologies (Taddeo, 2012). Accordingly, as technology becomes readily available to various entities, the ability to conduct or perform warfare through technological means is multiplying.
Eavesdropping is listening to the private conversations or private messages that are not intended for this device. A device may listen to another network of devices that are communicating within themselves. In IoT, devices within our home interact with each other and will communicate with the server. So if an untrusted device is fixed in the home it will not only listen to the messages that are intended to it but also to all the messages. This problem may be reduced by having different routers for the communication. Using different ports for internal and external communications reduces the risk of eavesdropping of messages. Manufacturers should have a protocol to protect the messages being listened by the untrusted devices. To protect customers, manufacturers should have a protocol like cryptography in which the messages are encrypted at the sender side and only the legitimate receiver can decrypt the messages.
Without proper protection, any part of any network can be susceptible to attacks or unauthorized activity. Routers, switches, and hosts can all be violated by professional hackers, company competitors. In fact, according to several studies, more than half of all network attacks are waged internally. To determine the best ways to protect against attacks, we should understand the many types of attacks that can be instigated and the damage that these attacks can cause to data. The most common types of attacks include Denial of Service (DoS), password, an...
Harmful usage of a sniffer is catching password and also capturing special and private information of transactions, like username, credit ID, account, and password, recording sending of email or messages and resuming the information, Some Sniffers have the ability to modify the computer's information also to the extent of even damaging the system. Weakening the security of a network even being successful in gaining higher level authority. With everyday more and different hackers using of packet sniffers, it has become one of the most important tool in the defence of cyber-attacks and cyber-crime. Writted by (2001 – 2014) Colasoft LLC
The internet offers high speed connectivity between countries, which allows criminals to commit cybercrimes from anywhere in the world. Due to the demand for the internet to be fast, networks are designed for maximum speed, rather than to be secure or track users (“Interpol” par. 1). This lack of security enables hacker...