In computing, a denial-of-service (DoS) attack is an attempt to make a machine or network resource unavailable to its intended users, such as to temporarily or indefinitely interrupt or suspend services of a host connected to the Internet - Wikipedia
This is a presentation i made about Denial of Service or a Distributed Denial of Service (DoS / DDoS) and the latest methods used to crash anything online and the future of such attacks which can disrupt the whole internet . Such attacks which are in TB's and can be launched from just single computer. And, there is not much that can be done to prevent them.
In computing, a denial-of-service (DoS) attack is an attempt to make a machine or network resource unavailable to its intended users, such as to temporarily or indefinitely interrupt or suspend services of a host connected to the Internet - Wikipedia
This is a presentation i made about Denial of Service or a Distributed Denial of Service (DoS / DDoS) and the latest methods used to crash anything online and the future of such attacks which can disrupt the whole internet . Such attacks which are in TB's and can be launched from just single computer. And, there is not much that can be done to prevent them.
SQL injection is a code injection technique, used to attack data-driven applications,
in which malicious SQL statements are inserted into an entry field for execution.
This is a method to attack web applications that have a data repository.The
attacker would send a specially crafted SQL statement that is designed to cause
some malicious action.SQL injection is an attack technique that exploits a security
vulnerability occurring in the database layer of an application and a service. This
is most often found within web pages with dynamic content.
denial-of-service (DoS) attack floods a server with traffic, making a website or resource unavailable. A distributed denial-of-service (DDoS) attack is a DoS attack that uses multiple computers or machines to flood a targeted resource. Both types of attacks overload a server or web application with the goal of interrupting services.
As the server is flooded with more Transmission Control Protocol/User Datagram Protocol (TCP/UDP) packets than it can process, it may crash, the data may become corrupted, and resources may be misdirected or even exhausted to the point of paralyzing the system.
+ Background & Basics of Web App Security, The HTTP Protocol, Web.
+ Application Insecurities, OWASP Top 10 Vulnerabilities (XSS, SQL Injection, CSRF, etc.)
+ Web App Security Tools (Scanners, Fuzzers, etc), Remediation of Web App
+ Vulnerabilities, Web Application Audits and Risk Assessment.
Web Application Security 101 was conducted by:
Vaibhav Gupta, Vishal Ashtana, Sandeep Singh from Null.
Vulnerabilities in modern web applicationsNiyas Nazar
Microsoft powerpoint presentation for BTech academic seminar.This seminar discuses about penetration testing, penetration testing tools, web application vulnerabilities, impact of vulnerabilities and security recommendations.
Computer Security and Intrusion Detection(IDS/IPS)LJ PROJECTS
This ppt explain you various type of possible attack, security property, Traffic Analysis, Security mechanism Intrusion detection system, vulnerability, Attack framework etc.
DOS / DDOS introduction
How Easy it is to get information
Real Life Examples MyDoom , GitHub , Dyn , Windows Server and Windows 10 servers running Internet Information Services (IIS) are vulnerable to denial of service (DOS) attacks
Base of Attacks
Types of DOS / DDOS
Attack Tools , LOIC, XOIC, Stacheldracht
DOS/DDOS Weaknesses
Category of OS/ DDOS
What to defend?
Botnets and Botnets mitigations
Michael Calce, a.k.a. MafiaBoy
Point of entrance / OSI Model ( If time permit)
SQL injection is a code injection technique, used to attack data-driven applications,
in which malicious SQL statements are inserted into an entry field for execution.
This is a method to attack web applications that have a data repository.The
attacker would send a specially crafted SQL statement that is designed to cause
some malicious action.SQL injection is an attack technique that exploits a security
vulnerability occurring in the database layer of an application and a service. This
is most often found within web pages with dynamic content.
denial-of-service (DoS) attack floods a server with traffic, making a website or resource unavailable. A distributed denial-of-service (DDoS) attack is a DoS attack that uses multiple computers or machines to flood a targeted resource. Both types of attacks overload a server or web application with the goal of interrupting services.
As the server is flooded with more Transmission Control Protocol/User Datagram Protocol (TCP/UDP) packets than it can process, it may crash, the data may become corrupted, and resources may be misdirected or even exhausted to the point of paralyzing the system.
+ Background & Basics of Web App Security, The HTTP Protocol, Web.
+ Application Insecurities, OWASP Top 10 Vulnerabilities (XSS, SQL Injection, CSRF, etc.)
+ Web App Security Tools (Scanners, Fuzzers, etc), Remediation of Web App
+ Vulnerabilities, Web Application Audits and Risk Assessment.
Web Application Security 101 was conducted by:
Vaibhav Gupta, Vishal Ashtana, Sandeep Singh from Null.
Vulnerabilities in modern web applicationsNiyas Nazar
Microsoft powerpoint presentation for BTech academic seminar.This seminar discuses about penetration testing, penetration testing tools, web application vulnerabilities, impact of vulnerabilities and security recommendations.
Computer Security and Intrusion Detection(IDS/IPS)LJ PROJECTS
This ppt explain you various type of possible attack, security property, Traffic Analysis, Security mechanism Intrusion detection system, vulnerability, Attack framework etc.
DOS / DDOS introduction
How Easy it is to get information
Real Life Examples MyDoom , GitHub , Dyn , Windows Server and Windows 10 servers running Internet Information Services (IIS) are vulnerable to denial of service (DOS) attacks
Base of Attacks
Types of DOS / DDOS
Attack Tools , LOIC, XOIC, Stacheldracht
DOS/DDOS Weaknesses
Category of OS/ DDOS
What to defend?
Botnets and Botnets mitigations
Michael Calce, a.k.a. MafiaBoy
Point of entrance / OSI Model ( If time permit)
A Denial-of-Service (DoS) attack is an attack meant to shut down a machine or network, making it inaccessible to its intended users. DoS attacks accomplish this by flooding the target with traffic, or sending it information that triggers a crash. In both instances, the DoS attack deprives legitimate users (i.e. employees, members, or account holders) of the service or resource they expected.
Victims of DoS attacks often target web servers of high-profile organizations such as banking, commerce, and media companies, or government and trade organizations
International Journal of Computational Engineering Research(IJCER) is an intentional online Journal in English monthly publishing journal. This Journal publish original research work that contributes significantly to further the scientific knowledge in engineering and Technology
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
An Ultimate Guide to DDos Attacks: Detection, Prevention and MitigationTechApprise
In this ultimate guide, you will learn everything about the Distributed Denial of Service (DDoS) Attacks including What are DDoS attacks, Types of DDos Attack, Major Causes, How to Detect DDoS Attacks, and How to Prevent/Mitigate a DDoS Attack and much more.
The Art of Cyber War [From Black Hat Brazil 2014]Radware
With cyber-attacks becoming a growing concern for organizations, availability-based attacks, also known as Denial of Service or Distributed Denial of Service attacks, have long moved from a form of cyber protest to a destructive weapon that is used by cyber criminals, hacktivists and even governments.
In 2013 we saw a growing use of a new type of attack where attackers used legitimate transactions to saturate application servers’ resources. In this presentation, Security Expert Werner Thalmeier demonstrates how such an advanced attack can be created from a laptop running in an anonymous public WiFi network. He also evaluates the attack landscape and its impact on organizations as well as shares the best practices to protect against such cyber-attacks.
Understand the current availability-based threat landscape and learn about new types of cyber-attacks that are being used to saturate resources. For more information on the state of Application and Network Security, please visit: http://www.radware.com/ert-report-2013/
A SYNCHRONIZED DISTRIBUTED DENIAL OF SERVICE PREVENTION SYSTEMcscpconf
DDoS attack is a distributed source but coordinated Internet security threat that attackers either degrade or disrupt a shared service to legitimate users. It uses various methods to inflict damages on limited resources. It can be broadly classified as: flood and semantic (logic) attacks. DDoS attacking mechanisms vary from time to time and simple but powerful attacking tools are freely available on the Internet. There have been many trials on defending victims from DDoS attacks. However, many of the previous attack prevention systems lack effective handling of various attacking mechanisms and protecting legitimate users from collateral damages during detection and protection. In this paper, we proposed a distributed but synchronized DDoS defense architecture by using multiple agents, which are autonomous systems that perform their assigned mission in other networks on behalf of the victim. The major assignments of defense agents are IP spoofing verification, high traffic rate limitation, anomaly packet detection, and attack source detection.These tasks are distributed through four agents that are deployed on different domain networks. The proposed solution was tested through simulation with sample attack scenarios on the model Internet topology. The experiments showed encouraging results. A more comprehensive attack protection and legitimate users prevention from collateral damages makes this system more effective than other previous works.
A survey of trends in massive ddos attacks and cloud based mitigationsIJNSA Journal
Distributed Denial of Service (DDoS) attacks today
have been amplified into gigabits volume with
broadband Internet access; at the same time, the us
e of more powerful botnets and common DDoS
mitigation and protection solutions implemented in
small and large organizations’ networks and servers
are no longer effective. Our survey provides an in-
depth study on the current largest DNS reflection a
ttack
with more than 300 Gbps on Spamhaus.org. We have re
viewed and analysed the current most popular
DDoS attack types that are launched by the hacktivi
sts. Lastly, effective cloud-based DDoS mitigation
and
protection techniques proposed by both academic res
earchers and large commercial cloud-based DDoS
service providers are discussed
A survey of trends in massive ddos attacks and cloud based mitigationsIJNSA Journal
Distributed Denial of Service (DDoS) attacks today
have been amplified into gigabits volume with
broadband Internet access; at the same time, the us
e of more powerful botnets and common DDoS
mitigation and protection solutions implemented in
small and large organizations’ networks and servers
are no longer effective. Our survey provides an in-
depth study on the current largest DNS reflection a
ttack
with more than 300 Gbps on Spamhaus.org. We have re
viewed and analysed the current most popular
DDoS attack types that are launched by the hacktivi
sts. Lastly, effective cloud-based DDoS mitigation
and
protection techniques proposed by both academic res
earchers and large commercial cloud-based DDoS
service providers are discussed
A SURVEY OF TRENDS IN MASSIVE DDOS ATTACKS AND CLOUD-BASED MITIGATIONSIJNSA Journal
Distributed Denial of Service (DDoS) attacks today have been amplified into gigabits volume with broadband Internet access; at the same time, the use of more powerful botnets and common DDoS mitigation and protection solutions implemented in small and large organizations’ networks and servers are no longer effective. Our survey provides an in-depth study on the current largest DNS reflection attack with more than 300 Gbps on Spamhaus.org. We have reviewed and analysed the current most popular DDoS attack types that are launched by the hacktivists. Lastly, effective cloud-based DDoS mitigation and protection techniques proposed by both academic researchers and large commercial cloud-based DDoS service providers are discussed.
Because the ability of Distributed Denial of Service (DDoS) attack creates huge
volume of unwanted traffic so it is widely regarded as a major threat for the current
Internet. A flooding-based DDoS attack is a very common way in which a victim machine is
attacked by sending a large amount of malicious traffic. Because of these attacks,existing
network-level congestion control mechanisms are inadequate for preventing service quality
from deteriorating. Although a number of techniques have been proposed to defeat DDoS
attacks but still It is very hard to detect and respond to DDoS attacks due to large and
complex network environments, the use of source-address spoofing, and moreover its
difficult to make difference between legitimate and attack traffic. To measure the impact of
DDoS attack on FTP services, repeated research in cyber security that is important to the
scientific advancement of the field is required. To fullfill this requirement, the cyber-
DEfense Technology Experimental Research (DETER) testbed has been developed. In this
paper, we have created one dumb-bell topology and generated background traffic as FTP
traffic. We have launched different types of DDoS attacks along with FTP traffic by using
attack tools available in DETER testbed. Finally we have measured impact of DDoS attack
on FTP server in terms of metrics such as throughput, percentage link utilization, and
normal packet survival ratio (NPSR).
Tierpoint webinar: Multi-vector DDoS attacks: detection and mitigation_Jan2016TierPoint
Nearly half of those businesses who suffered a DDoS attack in 2014 saw their organization taken completely offline. Why? Because over 80% of DDoS attacks are now multi-vector, striking the application layer and the network layer simultaneously, and often dragging on for days. During this webinar, Paul Mazzucco, TierPoint's Chief Security Officer, describes how these multi-vector DDoS attacks are being perpetrated and what you can do to mitigate against these complex intrusions.
Saudi Arabia stands as a titan in the global energy landscape, renowned for its abundant oil and gas resources. It's the largest exporter of petroleum and holds some of the world's most significant reserves. Let's delve into the top 10 oil and gas projects shaping Saudi Arabia's energy future in 2024.
Explore the innovative world of trenchless pipe repair with our comprehensive guide, "The Benefits and Techniques of Trenchless Pipe Repair." This document delves into the modern methods of repairing underground pipes without the need for extensive excavation, highlighting the numerous advantages and the latest techniques used in the industry.
Learn about the cost savings, reduced environmental impact, and minimal disruption associated with trenchless technology. Discover detailed explanations of popular techniques such as pipe bursting, cured-in-place pipe (CIPP) lining, and directional drilling. Understand how these methods can be applied to various types of infrastructure, from residential plumbing to large-scale municipal systems.
Ideal for homeowners, contractors, engineers, and anyone interested in modern plumbing solutions, this guide provides valuable insights into why trenchless pipe repair is becoming the preferred choice for pipe rehabilitation. Stay informed about the latest advancements and best practices in the field.
Water scarcity is the lack of fresh water resources to meet the standard water demand. There are two type of water scarcity. One is physical. The other is economic water scarcity.
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Industrial Training at Shahjalal Fertilizer Company Limited (SFCL)MdTanvirMahtab2
This presentation is about the working procedure of Shahjalal Fertilizer Company Limited (SFCL). A Govt. owned Company of Bangladesh Chemical Industries Corporation under Ministry of Industries.
2. o Introduction to DDoS
o How it Works
o Aim of DDoS Attack
o Types of DDoS
o DDoS Symptoms
o DDoS Mitigation
o Famous DDoS Attacks
Table of Content
2
3. A Distributed Denial of Service (DDoS) attack is
an attempt to make an online service
unavailable by overwhelming it with traffic from
multiple sources.
In the United States, the people that take part
in DDoS attacks are charged with legal offenses
at the federal level, both criminally and civilly.
Introduction
3
4. The average DDoS attack is about 50 gbps.
DDoS Duration :- not defined
Targets :- Gaming industries , banks , news
websites
Introduction
4
5. In a DoS attack, a hacker uses a single
Internet connection to either exploit a
software vulnerability or flood a target with
fake requests—usually in an attempt to
exhaust server resources .
On the other hand, distributed denial of
service (DDoS) attacks are launched from
multiple connected devices that are
distributed across the Internet.
DDoS VS DoS
5
6. In a typical DDoS attack, the hacker begins
by exploiting a computer system and
making it the DDoS master.
The attack master system identifies other
vulnerable systems and gains control over
them by either infecting the systems
with malware or through bypassing the
authentication controls .
How DDoS attack works
6
7. The attacker creates a command-and-
control server to command the network of
bots, also called a botnet.
The person in control of a botnet is
sometimes referred to as the botmaster.
Their main aim is to prevent legitimate
users from accessing a system or site.
How DDoS attack works
7
10. Common reason for DDoS attacks are:
1.Expression of anger and criticism.
2.Training ground for other attacks.
3.Distraction from other malicious actions.
4.Anticompetitive business practices.
5.Means to extract money.
6.To disrupt operation of private or government
enterprise.
AIM OF A DDoS ATTACK
10
11. There are broadly 3 types of DDoS attacks :-
Network or Volume centric attack – 64%
Protocol attacks – 20%
Ap Application layer attack - 16%
Types of DDoS attacks
11
12. These attacks use bots and botnets to
flood the network layers with a substantial
amount of seemingly legitimate traffic.
This consumes an excessive amount of
bandwidth within or outside of the network
and causes network operations to become
extremely slow or to not work at all.
Network or Volume Centric
12
13. These kinds of attacks are more difficult to
mitigate than attacks from a single source
Volumetric attacks come in a variety of forms,
including:
• User Datagram Protocol (UDP) Floods
• ICMP floods ( Internet Control Message
Protocol)
Network or Volume Centric
13
14. Random ports on a server are flooded with UDP
packets, causing the server to repeatedly
check for and respond to non-existent
applications at the ports.
As a result, the system is unable to
respond to legitimate applications.
UDP Floods
14
15. A server is flooded with ICMP echo
requests from multiple spoofed IP addresses.
As the targeted server processes and
replies to these phony requests, it is
eventually overloaded and unable to process
valid ICMP echo requests.
ICMP Floods
15
16. The goal of an application layer attack is to
exhaust resources by consuming too much.
They target the layer that manages HTTP and
SMTP communication.
They target web application packets in order to
disrupt the transmission of data between hosts.
They attack on apache ,windows web servor ,
as they are more vulnerable.
Application – layer attack
16
17. These type of attacks are more sophisticated
and are gaining in popularity than other types
of DDoS attacks.
For example:- an HTTP Flood – the most
common application-layer attack – uses
botnets to force a target to expend an
excessive amount of resources when
responding to a HTTP request
Application – layer attack
17
18. HTTP floods and other application-layer
DDoS attacks mimic human-user behavior
making them much more difficult to detect
than other types of attacks.
Web based email apps, WordPress, Joomla, and
forum software are good examples of
application specific targets.
Application – layer attack
18
19. Protocol attacks target the connection state
tables in firewalls, web application servers,
and other infrastructure components.
One of the most common state-exhaustion
attacks was the ping of death, in which a
65,536-byte ping packet is defragmented
and sent to a target server as fast as
possible.
Protocol attack
19
20. Once the target reassembles the large
packet, a buffer overload typically occurs.
In the likely scenario that the target
attempts to respond to the pings, even
more bandwidth is consumed, eventually
causing the targeted system to crash.
Protocol attack
20
22. • DDoS attacks are the single largest threat to
our Internet and the Internet of Things.
• The more our world becomes connected and
dependent on the Internet, the more
opportunities to get exploited by these types of
attack.
DDoS Attack
22
23. There was a 180% percent increase in the total number of DDoS attacks in 2016
compared to 2015.
The online gaming sector is currently the most susceptible to attack, accounting for
50% of all DDoS attacks.
Software and technology companies -25%
Internet and telecoms companies - 5%
of the total attack.
FACTS
23
24. 3 Most Famous DDoS Attacks
I. Scientologist Church Gets Hit Hard By
Anonymous!
II. Hong Kong’s Democracy Movement Attack
III.The New Year Attack !
IV.DDoS in India
Famous Attack
24
25. • This attack took place on January 8, 2008 .
• It was attacked by hacker group Anonymous.
• The DDoS attack was meant to be a protest
against the Church of Scientology’s philosophies
and practices.
• The program was able to shut down the
Scientologist church website momentarily.
• The program that was deployed was used to
fight for Wikileaks.
Scientologist Church
25
26. • It started in June 2014, in Hong Kong to bring
destruction to the Chinese government . This
movement is called Occupy Central.
• Occupy Central used this DDoS attack against
the Chinese government because they wanted a
one man one vote system when electing
officials to represent political office.
• This all led Occupy Central to push their DDoS
attack forward and brought down a major
political website.
Hong Kong’s Democracy Attack
26
27. • It took place on December 31,2015.
• New World Hacking took responsibly for this
huge DDoS attack.
• They were capable of disrupting BBC’s global
website, along with Donald Trumps website as
well.
• The tool that was used to deploy these attacks
is called BangStresser.
The New Year Attack
27
28. • It took place on November ,2016.
• It was one of the biggest attack ever done
on an ISP.
• The attack was of a huge magnitude of 200
gigabytes per second.
• This is the reason behind the recent slowing
down of the internet experienced by users
around Mumbai.
• An FIR was filed against the DDoS attack
with the Mumbai police.
The DDoS Attack in India
28
29. The United States Computer Emergency Readiness
Team(US-CERT) has identified symptoms of a
denial-of-service attack to include:
unusually slow network performance
unavailability of a particular web site
inability to access any web site
dramatic increase in the number of spam emails
received (this type of DoS attack is considered
an e-mail bomb).
SYMPTOMS
29
31. DDoS mitigation is a set of techniques or tools
for resisting the impact of DDoS attacks on
networks attached to the Internet by protecting
the target and relay networks.
DDoS mitigation also requires identifying
incoming traffic to separate human traffic from
human-like bots and hijacked web browsers.
The process is done by comparing signatures
and examining different attributes of the traffic,
including IP addresses, cookie variations, HTTP
headers, and JavaScript footprints.
DDoS Mitigation
31
33. Best practices for DDoS mitigation include
having both anti-DDoS technology and anti-
DDoS emergency response services such
as Incapsula, Akamai, CloudFlare or Radware.
DDoS mitigation is also available through cloud-
based providers.
User must install anti-virus.
User must install firewall.
DDoS Mitigation
33
34. Myths:
Enterprises believe they are fully protected
with only cloud based DDoS mitigation.
Facts:
Cloud based DDoS mitigation only protects
against large, volumetric attacks, and fails
to provide adequate protection against low
and slow application layer attacks
DDoS Myths
34
35. Myths:
We will not become a target. Our business is
too small.
Facts:
DDoS attacks do not discriminate. Any
organization, big or small, is in danger or
experiencing the risks associated with a
DDoS attack.
DDoS Myths
35
36. Myths:
My Internet Service Provider (ISP) is protecting
me from DDoS attacks.
Facts:
ISP’s lack the ability to detect, analyze and
mitigate DDoS attacks and other cyber
threats
DDoS Myths
36