http://www.eecis.udel.edu/~sunshine/publications/ccr.pdf
1a) An DDoS(Distributed Denial of Service) Attack consists of several phases – firstly the attacker recruits multiple agent machines which will be later on infected with the attack code and further exploited. The infected machines can be used to further recruit new agents. We can outline those phases as Recruit, Exploit, Infect and Use.
• ATTACK AUTOMATION STRATEGY
The attack automation strategy stands for how much of the DDoS attack does an attacker want to make automatic and how much to leave for manual control. The strategy depends on the degree of automation of the phases of the attack. There are three general automation degrees - Manual, Automated and Semi-Automated- which are explained as follows:
o Manual
In that case, the hacker manually recruits machines by scanning remote ones for vulnerabilities, breaks their security mechanisms, installs the prepared attack code and then directs the attack. This type of a DDoS Attack has become really outdated since lately all the recruitment phase has been automated.
Weak design consideration in terms of functionality and productivity.
o Semi-Automated
In the Semi-Automated DDoS attacks the DDoS “network” is made of a handler and an agent machine. There is automation present for the Recruit, Exploit and Infect phases. Through the communication between the handler and the agent, the attacker specifies the attack type, the onset, the duration and the victims ID. The
2. Active Attack: Active attacks are those attacks where the attacker takes malicious action in addition to passively listening to ongoing traffic e.g. attacker might choose to modify packets, inject packets or even disrupt network service. The misbehaving node has to bear some energy costs in order to perform some harmful operation like changing the data. Active attacks cause damage and are malicious which often threaten integrity, availability of the network. These type of attacks can be internal or external [7].
With cyber war, nations are able to skip the battlefield. Gone are the days where troops line up across from each other hoping to do damage to the other. Clarke explains that people, industries, governments, companies and organizations can be possible targets and are vulnerable to these attacks. Keeping that in mind should help these targets become defensive minded and shield off attacks before they happen. As we all know, the prevention is better than the
This presentation discusses an incident known as a denial of service (DoS) as well as an intrusion of the clinic’s network systems. A denial of service (DoS) attack is designed to shut down services which a business needs to operate. This incident caused widespread slowness and outages to internet services and affected the clinic’s capability to properly treat its patients. In this presentation, the incident is examined. The processes to detect, analyze, contain, eradicate and recover from the incident are the focus of the presentation. Once the incident investigation was complete, special consideration was made as to what was learned and how clinic staff can help protect the clinic’s ability to properly serve its patients.
Threat: Denial of Service is the interruption of service on a device that prevents legitimate users from accessing it. A common source of this type of attack is from malicious agents. This is a threat because of the importance of the server to this small investigation business. Since this is where clients upload their evidence, it must always perform at its optimal capability. With this in mind denial of service attacks becomes a great threat, as the opposing party in a case will benefit from evidence not being not being uploaded to the attorneys (OWASP Top 10, 2015).
They have coordinated many distributed denial of service (DDoS) attacks on various organizations. A DDoS attack is an attack in which a multitude of compromised systems attack a single target, causing a denial of service for users of the attacked system. The excess of incoming messages to the target system essentially forces it to shut down, thereby denying service to the system to legitimate users.
Summary: A private LAN network comprising of hundreds of end devices and several servers in DMZ is protected by Cisco ASA (Firewall). In the internet the most commonly found network attack is to take down enterprise resources by DDOS(Distributed Denial of Service) attack either on Servers(which will impact hundreds of end users) or on the network resources like routers itself. In this practical simulation we will analyse how a DOS attack happens on web server placed in DMZ from the internet via traffic flooding, and how we can fine tune ASA to mitigate and stop further attacks on the network. Devices used: a) b) c) d) e) Attacker PC – Windows XP – Service Pack3 Web server (Simulated in
This paper discusses the possible future network attack which will probably use an organized army of malicious nodes called malnets. These malnets are capable of delivering many different types of attacks. According to several researchers who are working on finding out how the malicious worms propagate on the internet the ground has already been set (Honeynet, 2005; Zheng & Duan; Geer, 2005; Staniford, Paxson & Weaver, 2002). However, "partly due to the lack of understanding of the resiliency and efficiency a malnet can have, countering malnets has been ineffective" (Li, Ehrenkranz & Kuenning, 2005).
Powerful discovery of DoS attacks is indispensable to the gatekeeper of online administrations. Deal with DoS assault location to a great extent concentrates on the development of system based discovery instruments. Discovery frameworks in light of these systems watch activity convey over the ensured systems. These components free the ensured online servers on or subsequent to observing assaults and verify that the servers can contribute themselves to present quality administrations with minimum postponement accordingly. Besides,
CC provides facilities like controlling signals, fast implementation of disaster recovery etc. some important benefits of CC integrating with SG are device and location independence, self-healing, virtualization services, adapt to fluctuation in energy. DDOS defense technique include attack prevention (packet filtering, ingress and egress technique and honeypot are used), attack detection, attack source identification (IP trace back methods can be used), attack reaction (history based IP filtering, load balancing), event logs, selective push-back, and other approaches ENERGOs to be consider.
As it is not possible to defend against everything everywhere, the Department of Defense must identify, prioritize, and defend its most important networks, including in a degraded or disrupted environment in the event of a successful attack (“Department of Defense Cyber Strategy,” 2015). One of the steps expected is
The year: 2015. The information age is well underway and is only gaining more power and force as time progresses. The many vast, intricate networks used for such things as communication, online shopping, business technologies and even online banking, are growing and metamorphosing into tools now utilized by not only the every-day consumer but rather political groups and individuals with extremist and even deadly intentions. Cyber warfare can be defined as politically inspired computer security hacking to achieve sabotage and/or espionage. Cyber warfare looks to seek and exploit weaknesses in a computer system with chaos and destruction ultimately in mind. Cyber warfare is increasingly described as the next battlefront. Conventional warfare (hand-to-hand combat) looks to be a thing of the past. Information systems and technologies are taking over the world and with it, the potential for global-sized destruction and political gain. As the global online community and its information systems are skyrocketing at alarming rates, so are the number of users and even governments looking for an edge over competitors and threats. Using technology the world is only beginning to understand, governments, terrorists, and individual actors are taking advantage of the lack of legislature, the unknown, and international and intrastate cooperation to wage a new kind of war. An emerging dichotomy remains, if it can be made, it can be hacked. Which begs the
Threat actors are hackers and or actors, normally residing inside or outside an organization. Their intentions range from money to political to fun or fright-instilling, and they act according to certain personalities, material/financial welfare, or
The internet is a medium that is becoming progressively important as it makes information available in a quick and easy manner. It has transformed communications and acts as a global network that allows people to communicate and interact without being limited by time, boarders and distance. However, the infrastructure is vulnerable to hackers who use the system to commit cyber crime. To accomplish this, they make use of innovative stealth techniques for their malicious purposes in the internet.
The best known practice is through forums with access to BotNet, where for only 5 $ you have X Attacks per month (which made it simple evil - minded people ...). Sites like Hack Forums have this service. What we usually do is attack with thousands and thousands of hits Zombies to exhaust network resources on the web that are attacking.
As well as PlayStation we the same group hit another gaming community named Blizzard and launched many DDoS attacks taking down their online gaming servers for hours at a time over the period of a few days. The group that took responsibility was called LizardSquad, they have also been known to target a website called KrebsonSecurity[dot]com. On KrebsonSecurty they have proof of people from the LizardSquad organization trying to find new “hackers” which is a debatable term for someone that DDoS’s considering DDoS’ing requires virtually no skill, and asking for them applicants to take down one of two sites. If they could accomplish this task then they could join the LizardSquad group of “hackers” or as KrebsonSecurity calls them, “a gaggle of young misfits that has long tried to silence this web site.” Another example of DDoS is a more drastic when the hacktivist anonymous used DDoS attacks in 2006 and 2007 to cost Hal Turner and his radio show that some considered to be politically incorrect thousands of dollars in bandwidth bills that his radio show eventually went under. Hal Turner eventually attempted to sue the hacking group but the suit was soon dropped by the courts.