Slides - TAMU Computer Science Faculty Pages
... Introduction to Computer & Networking Security Dr. Guofei Gu http://faculty.cse.tamu.edu/guofei/ ...
... Introduction to Computer & Networking Security Dr. Guofei Gu http://faculty.cse.tamu.edu/guofei/ ...
botnet_detection
... Challenges for Botnet Detection Bots are stealthy on the infected machines – We focus on a network-based solution Bot infection is usually a multi-faceted and multiphased process – Only looking at one specific aspect likely to fail Bots are dynamically evolving – Static and signature-based ap ...
... Challenges for Botnet Detection Bots are stealthy on the infected machines – We focus on a network-based solution Bot infection is usually a multi-faceted and multiphased process – Only looking at one specific aspect likely to fail Bots are dynamically evolving – Static and signature-based ap ...
Introduction (cont.)
... A Botnet is a collection of software agents, or robots that run autonomously and automatically. The term is most commonly associated with malicious software. Main motivation: recognition and financial gain. Bot controller can ‘rent’ services of the botnet to third parties (Botnet as service) ...
... A Botnet is a collection of software agents, or robots that run autonomously and automatically. The term is most commonly associated with malicious software. Main motivation: recognition and financial gain. Bot controller can ‘rent’ services of the botnet to third parties (Botnet as service) ...
Games and the Impossibility of Realizable Ideal Functionality
... Conclution Sybil atack is not very efficient to mitigate Storm worm peer-to-peer botnet. ...
... Conclution Sybil atack is not very efficient to mitigate Storm worm peer-to-peer botnet. ...
A System Prototype for Data Leakage Monitoring in the Cloud
... in today‘s cyber attacks • In this paper ▫ provide taxonomy of Botnets C&C channels ▫ detection framework which focuses on P2P based and IRC based Botnets ...
... in today‘s cyber attacks • In this paper ▫ provide taxonomy of Botnets C&C channels ▫ detection framework which focuses on P2P based and IRC based Botnets ...
Motivation behind botnets
... “The Storm worm botnet has grown so massive and far-reaching that it easily overpowers the world's top supercomputers…If you add up all 500 of the top supercomputers, it blows them all away with just 2 million of its machines. It's very frightening that criminals have access to that much computing p ...
... “The Storm worm botnet has grown so massive and far-reaching that it easily overpowers the world's top supercomputers…If you add up all 500 of the top supercomputers, it blows them all away with just 2 million of its machines. It's very frightening that criminals have access to that much computing p ...
Defense
... Due to prevalence of HTTP usage it is harder to track a botnet that uses HTTP Protocols Using HTTP can allow a botnet to skirt the firewall restrictions that hamper IRC botnets Detecting HTTP botnets is harder but not impossible since the header fields and the payload do not match usual transmission ...
... Due to prevalence of HTTP usage it is harder to track a botnet that uses HTTP Protocols Using HTTP can allow a botnet to skirt the firewall restrictions that hamper IRC botnets Detecting HTTP botnets is harder but not impossible since the header fields and the payload do not match usual transmission ...
botnet
... Due to prevalence of HTTP usage it is harder to track a botnet that uses HTTP Protocols Using HTTP can allow a botnet to skirt the firewall restrictions that hamper IRC botnets Detecting HTTP botnets is harder but not impossible since the header fields and the payload do not match usual transmission ...
... Due to prevalence of HTTP usage it is harder to track a botnet that uses HTTP Protocols Using HTTP can allow a botnet to skirt the firewall restrictions that hamper IRC botnets Detecting HTTP botnets is harder but not impossible since the header fields and the payload do not match usual transmission ...
presentation source
... content, may be centralized (e.g., Napster), distributed over part of the filesharing nodes (e.g., Gnutella), or distributed over all or a large fraction of the nodes (e.g., Overnet). – Design a new P2P communication protocol to be used in a bot-only P2P ...
... content, may be centralized (e.g., Napster), distributed over part of the filesharing nodes (e.g., Gnutella), or distributed over all or a large fraction of the nodes (e.g., Overnet). – Design a new P2P communication protocol to be used in a bot-only P2P ...
botnet
... discover, hard to defend. Disadvantage: Hard to launch large scale attacks because P2P technologies are currently only capable of supporting very small groups (< 50 peers) ...
... discover, hard to defend. Disadvantage: Hard to launch large scale attacks because P2P technologies are currently only capable of supporting very small groups (< 50 peers) ...
L19
... “Phishing attacks use both social engineering and technical subterfuge to steal consumers' personal identity data and financial account ...
... “Phishing attacks use both social engineering and technical subterfuge to steal consumers' personal identity data and financial account ...
CNCERT/CC Annual Report 2008
... 2.4. Security Information Services CNCERT/CC’s users of its security information services are ISPs, cooperative key infrastructures, and relevant government agencies as well. In 2008, 101 internal warnings and 4 critical vulnerability advisories had been delivered in time. 277 articles were publishe ...
... 2.4. Security Information Services CNCERT/CC’s users of its security information services are ISPs, cooperative key infrastructures, and relevant government agencies as well. In 2008, 101 internal warnings and 4 critical vulnerability advisories had been delivered in time. 277 articles were publishe ...
paper - acsac
... threats to internet security. To create botnets, hackers infect millions of computers, or so-called bots, and orchestrate them to launch a variety of attacks such as identity theft, spamming, and distributed denial-ofservice. In spite of the tremendous efforts from the internet security community to ...
... threats to internet security. To create botnets, hackers infect millions of computers, or so-called bots, and orchestrate them to launch a variety of attacks such as identity theft, spamming, and distributed denial-ofservice. In spite of the tremendous efforts from the internet security community to ...
Botnets: Infrastructure and Attacks
... Botnet Application: Phishing “Phishing attacks use both social engineering and technical subterfuge to steal consumers' personal identity data and financial account credentials.” -- Anti-spam working group ...
... Botnet Application: Phishing “Phishing attacks use both social engineering and technical subterfuge to steal consumers' personal identity data and financial account credentials.” -- Anti-spam working group ...
Do you know someone may be watching you?
... ◦ networking and system techniques ◦ applied cryptography ◦ machine learning ◦ probability/statistics ◦ information theory ◦ graph theory ...
... ◦ networking and system techniques ◦ applied cryptography ◦ machine learning ◦ probability/statistics ◦ information theory ◦ graph theory ...
Measurements and Mitigation of Peer-to-Peer-based Botnets:
... A bot is a computer program installed on a compromised machine which offers an attacker a remote control mechanism. Botnets, i.e., networks of such bots under a common control infrastructure, pose a severe threat to today’s Internet: Botnets are commonly used for Distributed Denial-of-Service (DDoS) ...
... A bot is a computer program installed on a compromised machine which offers an attacker a remote control mechanism. Botnets, i.e., networks of such bots under a common control infrastructure, pose a severe threat to today’s Internet: Botnets are commonly used for Distributed Denial-of-Service (DDoS) ...
Attacks and Mitigations
... – For example, worms attack through the network connection to get in. That's just the first step. Worms usually carry an installer for malware, such as spyware or botware as their payload. The worm's work is done when the payload is installed and running on the computer. ...
... – For example, worms attack through the network connection to get in. That's just the first step. Worms usually carry an installer for malware, such as spyware or botware as their payload. The worm's work is done when the payload is installed and running on the computer. ...
Lecture 12 - USC`s Center for Computer Systems Security
... – IDS protects local hosts within its perimeter (LAN) – An enumerator would identify both local as well as remote infections ...
... – IDS protects local hosts within its perimeter (LAN) – An enumerator would identify both local as well as remote infections ...
Multifaceted Approach to Understanding the Botnet Phenomenon
... difference between the footprint and the lifetime of botnets is important because the life of a bot is much bigger tha the time it stays connected to the IRC server. A bot usually joins a channel in an average period of 25 minutes (the 90% stays less than 50 minutes) but it exists as a host to the i ...
... difference between the footprint and the lifetime of botnets is important because the life of a bot is much bigger tha the time it stays connected to the IRC server. A bot usually joins a channel in an average period of 25 minutes (the 90% stays less than 50 minutes) but it exists as a host to the i ...
Cooperation in Intrusion Detection Networks
... • Preserve the privacy of the email owners • A p2p system is used for the scalability of the system • Emails are divided into feature trunks and digested into feature finger prints ...
... • Preserve the privacy of the email owners • A p2p system is used for the scalability of the system • Emails are divided into feature trunks and digested into feature finger prints ...
Networks and Security - Web Services Overview
... Goal was to infect quickly, but do no other damage (i.e. files left alone) In the middle of the design, a patch was released for one vulnerability Morris quickly launched worm before it was completed ...
... Goal was to infect quickly, but do no other damage (i.e. files left alone) In the middle of the design, a patch was released for one vulnerability Morris quickly launched worm before it was completed ...
Ethics
... Goal was to infect quickly, but do no other damage (i.e. files left alone) In the middle of the design, a patch was released for one vulnerability Morris quickly launched worm before it was completed ...
... Goal was to infect quickly, but do no other damage (i.e. files left alone) In the middle of the design, a patch was released for one vulnerability Morris quickly launched worm before it was completed ...
Storm botnet
The Storm botnet or Storm worm botnet (also known as Dorf botnet and Ecard malware) is a remotely controlled network of ""zombie"" computers (or ""botnet"") that have been linked by the Storm Worm, a Trojan horse spread through e-mail spam. At its height in September 2007, the Storm botnet was running on anywhere from 1 million to 50 million computer systems, and accounted for 8% of all malware on Microsoft Windows computers. It was first identified around January 2007, having been distributed by email with subjects such as ""230 dead as storm batters Europe,"" giving it its well-known name. The botnet began to decline in late 2007, and by mid-2008, had been reduced to infecting about 85,000 computers, far less than it had infected a year earlier.As of December 2012 the original creators of storm still haven't been found. The Storm botnet has displayed defensive behaviors that indicated that its controllers were actively protecting the botnet against attempts at tracking and disabling it, by specifically attacking the online operations of some security vendors and researchers who had attempted to investigate it. Security expert Joe Stewart revealed that in late 2007, the operators of the botnet began to further decentralize their operations, in possible plans to sell portions of the Storm botnet to other operators. It was reportedly powerful enough to force entire countries off the Internet, and was estimated to be capable of executing more instructions per second than some of the world's top supercomputers. The United States Federal Bureau of Investigation considered the botnet a major risk to increased bank fraud, identity theft, and other cybercrimes.
