Chapter 02: The Need for Security
... 16. ____________________ is a technique used to gain unauthorized access to computers, wherein the intruder sends messages with a source IP address that has been forged to indicate that the messages are coming from a trusted host. ANS: Spoofing PTS: 1 17. ____________________ is unsolicited commerci ...
... 16. ____________________ is a technique used to gain unauthorized access to computers, wherein the intruder sends messages with a source IP address that has been forged to indicate that the messages are coming from a trusted host. ANS: Spoofing PTS: 1 17. ____________________ is unsolicited commerci ...
University of Piraeus Department of Digital Systems Post graduate
... trojan-adware does not notify the user for gathering information and it is classified as malware. If the adware informs the user for gather information, then it is not considered as a malware. Dialer: A dialer is a subcategory of Riskware, legitimate programs that may cause damage if they are used ...
... trojan-adware does not notify the user for gathering information and it is classified as malware. If the adware informs the user for gather information, then it is not considered as a malware. Dialer: A dialer is a subcategory of Riskware, legitimate programs that may cause damage if they are used ...
Operating Systems
... Virus written in assembly language Inserted into another program use ...
... Virus written in assembly language Inserted into another program use ...
Threats To Windows Users and Countermeasures
... Broadband technology such as DSL and cable modem connection has contributed to the growing number of home PC threats. This threat affects users of other operating systems as well. The 'always on' and no 'connection setup' waiting features which are much preferred by users actually make this kind of ...
... Broadband technology such as DSL and cable modem connection has contributed to the growing number of home PC threats. This threat affects users of other operating systems as well. The 'always on' and no 'connection setup' waiting features which are much preferred by users actually make this kind of ...
Malicious Threats - The University of Texas at Dallas
... Sanjay Goel, School of Business/Center for Information Forensics and Assurance University at Albany Proprietary Information ...
... Sanjay Goel, School of Business/Center for Information Forensics and Assurance University at Albany Proprietary Information ...
Malicious Threats - The University of Texas at Dallas
... Sanjay Goel, School of Business/Center for Information Forensics and Assurance University at Albany Proprietary Information ...
... Sanjay Goel, School of Business/Center for Information Forensics and Assurance University at Albany Proprietary Information ...
zombie. - People Search Directory
... • Virus is a program that can reproduce itself by attaching its code to another program. • Often written in assembler or C. • Attacker infects a program on his own machine, then gets that program distributed. • Once installed on victim’s machine, it remains dormant until executed. ...
... • Virus is a program that can reproduce itself by attaching its code to another program. • Often written in assembler or C. • Attacker infects a program on his own machine, then gets that program distributed. • Once installed on victim’s machine, it remains dormant until executed. ...
Firewall Evolution
... Computer viruses are self-replicating computer programs that insert themselves into resources such as data files and other computer programs. They can wreak havoc on individual computers and computer networks, disrupting productivity and inflicting billions of dollars of damage. ...
... Computer viruses are self-replicating computer programs that insert themselves into resources such as data files and other computer programs. They can wreak havoc on individual computers and computer networks, disrupting productivity and inflicting billions of dollars of damage. ...
Slides - School of Information Sciences
... Use Multi-Level Security Mechanisms Place programs at lowest level Don’t allow users to operate at that level Prevents writes by malicious code INFSCI 2935: Introduction to Computer Security ...
... Use Multi-Level Security Mechanisms Place programs at lowest level Don’t allow users to operate at that level Prevents writes by malicious code INFSCI 2935: Introduction to Computer Security ...
Operating System Security Rules
... as the administration account will force the hacker to find another legitimate username. Do not delete the system account since it may be needed by various system functions. Finding a legitimate username may not be difficult because most companies use very similar username naming conventions (e.g., ...
... as the administration account will force the hacker to find another legitimate username. Do not delete the system account since it may be needed by various system functions. Finding a legitimate username may not be difficult because most companies use very similar username naming conventions (e.g., ...
COMPUTER CRIME Computer crime
... Malware Bots – a computer program that runs automatically. Malware bots – bots that are used for fraud, sabotage, denial-of-service attacks, or some other malicious purpose Zombies (or drones) – malware-bot-infected computers ...
... Malware Bots – a computer program that runs automatically. Malware bots – bots that are used for fraud, sabotage, denial-of-service attacks, or some other malicious purpose Zombies (or drones) – malware-bot-infected computers ...
The Evolution of Malicious Agents - Cyber Defense
... unauthorized access to a networked system. If a worm-like agent is programmed to take advantage of several common software vulnerabilities, it will have the ability to rapidly propagate itself across the victim’s network. Techniques for controlling the agent’s propagation rates and attack behavior a ...
... unauthorized access to a networked system. If a worm-like agent is programmed to take advantage of several common software vulnerabilities, it will have the ability to rapidly propagate itself across the victim’s network. Techniques for controlling the agent’s propagation rates and attack behavior a ...
Malicious Software
... • Useful to identify new and “zero day” malware • Code analysis – Based on the instructions, the antivirus can determine whether or not the program is malicious, i.e., program contains instruction to delete system files, ...
... • Useful to identify new and “zero day” malware • Code analysis – Based on the instructions, the antivirus can determine whether or not the program is malicious, i.e., program contains instruction to delete system files, ...
Anti-Virus - F5 Application Brief
... Anti-virus applications attempt to identify, thwart and eliminate computer viruses and other malicious software. There are tens of thousands of known viruses, with hundreds more being created every month. The ever-increasing use of the Internet to transmit data increases exposure to these viruses. V ...
... Anti-virus applications attempt to identify, thwart and eliminate computer viruses and other malicious software. There are tens of thousands of known viruses, with hundreds more being created every month. The ever-increasing use of the Internet to transmit data increases exposure to these viruses. V ...
www.cs.hofstra.edu
... Polymorphic virus: mutates with every infection making detection by “signature” impossible (mutation engine) Macro virus: infects Microsoft Word docs; 2/3’s of all viruses ...
... Polymorphic virus: mutates with every infection making detection by “signature” impossible (mutation engine) Macro virus: infects Microsoft Word docs; 2/3’s of all viruses ...
Internet and Network Attacks
... Hardware Theft and Vandalism What are hardware theft and hardware vandalism? Hardware theft is act of stealing computer equipment ...
... Hardware Theft and Vandalism What are hardware theft and hardware vandalism? Hardware theft is act of stealing computer equipment ...
Discovering Computers 2008
... Hardware Theft and Vandalism What are hardware theft and hardware vandalism? Hardware theft is act of stealing computer equipment ...
... Hardware Theft and Vandalism What are hardware theft and hardware vandalism? Hardware theft is act of stealing computer equipment ...
pps - AquaLab - Northwestern University
... – It can reproduce itself, attach its code to another program – How do they work • Companion viruses – e.g. prog.com instead of prog.exe • Parasitic executable viruses – cavity viruses • Boot sector viruses – of course you still need the boot sector so copy some other place • Macro viruses – open fi ...
... – It can reproduce itself, attach its code to another program – How do they work • Companion viruses – e.g. prog.com instead of prog.exe • Parasitic executable viruses – cavity viruses • Boot sector viruses – of course you still need the boot sector so copy some other place • Macro viruses – open fi ...
Discovering Computers 2006
... Computer Viruses, Worms, and Trojan Horses What is a denial of service attack and back door? A denial of service attack is an assault which disrupts access to an Internet service such as the Web or e-mail ...
... Computer Viruses, Worms, and Trojan Horses What is a denial of service attack and back door? A denial of service attack is an assault which disrupts access to an Internet service such as the Web or e-mail ...
Computer Security, Ethics, and Privacy
... Computer Viruses, Worms, and Trojan Horses What is a denial of service attack and back door? A denial of service attack is an assault which disrupts computer access to an Internet service such as the Web or e-mail ...
... Computer Viruses, Worms, and Trojan Horses What is a denial of service attack and back door? A denial of service attack is an assault which disrupts computer access to an Internet service such as the Web or e-mail ...
Chapter 19: Malicious Logic - Welcome to nob.cs.ucdavis.edu!
... Executable Infectors (con’t) • Jerusalem (Israeli) virus – Checks if system infected • If not, set up to respond to requests to execute files ...
... Executable Infectors (con’t) • Jerusalem (Israeli) virus – Checks if system infected • If not, set up to respond to requests to execute files ...
BitDefenDer Active virus control:
... Heuristics: detecting tomorrow’s threats today As mentioned previously, the exponentially increasing volume of malware creates real challenges for security vendors: ensuring a timely response to each new and variant strain of malware to emerge is, as you can probably imagine, far from easy. And yet ...
... Heuristics: detecting tomorrow’s threats today As mentioned previously, the exponentially increasing volume of malware creates real challenges for security vendors: ensuring a timely response to each new and variant strain of malware to emerge is, as you can probably imagine, far from easy. And yet ...
Computer virus
A computer virus is a malware program that, when executed, replicates by inserting copies of itself (possibly modified) into other computer programs, data files, or the boot sector of the hard drive; when this replication succeeds, the affected areas are then said to be ""infected"". Viruses often perform some type of harmful activity on infected hosts, such as stealing hard disk space or CPU time, accessing private information, corrupting data, displaying political or humorous messages on the user's screen, spamming their contacts, logging their keystrokes, or even rendering the computer useless. However, not all viruses carry a destructive payload or attempt to hide themselves—the defining characteristic of viruses is that they are self-replicating computer programs which install themselves without user consent.Virus writers use social engineering and exploit detailed knowledge of security vulnerabilities to gain access to their hosts' computing resources. The vast majority of viruses target systems running Microsoft Windows, employing a variety of mechanisms to infect new hosts, and often using complex anti-detection/stealth strategies to evade antivirus software. Motives for creating viruses can include seeking profit, desire to send a political message, personal amusement, to demonstrate that a vulnerability exists in software, for sabotage and denial of service, or simply because they wish to explore artificial life and evolutionary algorithms.Computer viruses currently cause billions of dollars' worth of economic damage each year, due to causing systems failure, wasting computer resources, corrupting data, increasing maintenance costs, etc. In response, free, open-source antivirus tools have been developed, and an industry of antivirus software has cropped up, selling or freely distributing virus protection to users of various operating systems. Even though no currently existing antivirus software is able to uncover all computer viruses (especially new ones), computer security researchers are actively searching for new ways to enable antivirus solutions to more effectively detect emerging viruses, before they have already become widely distributed.