2) Why is it hard to estimate the extent of computer crime?
- We can't really estimate how many people commit computer crimes or even how far the computer crimes go because some people commit computer crimes without even knowing it. Some do it intentionally, but even then not all crimes are recorded or dectected. Therefore, we don't know for sure, nor can we estimate.
4) What is the most common computer crime?
- Software Piracy. It is a violation of intellectual property laws.
Who commits it?
- The crime itself is committed by millions of people, even if they don't realize they're doing it, but it can also be committed by young people who are smart with computers (hackers). But even then, hackers are responsible for only a small fraction of computer crimes. The computer criminal is usually someone who is trusted with personal things and has knowledge of the computer system.
What is being done to stop it?
- Because of all the computer crimes, many organizations developed a new security techniques to protect their system. (i.e. keys, scanners, badges, etc.)
Wednesday, January 13, 2010
Monday, January 11, 2010
Key Terms
sabotage: A malicious attack on work, tools, or business.
malware: Malicious software, especially destructive programs such as the viruses, worms, and Trojan horses devised and spread by computer saboteurs.
virus: Software that spreads from program to program, or from disk to disk, and uses each infected program or disk to make copies of itself. A form of software sabotage.
macro virus: Viruses that attach to and are transmitted through macros embedded in documents; usually spread via email.
email virus: Viruses spread via e-mail.
worms: Programs that use computer hosts to reproduce themselves. Worm programs travel independently over computer networks, seeking out uninfected workstations to occupy. A form of software sabotage.
trojan horse: A program that performs a useful task while at the same time carrying out some secret destructive act. A form of software sabotage.
logic bomb: A program designed to attack in response to a particular logical event or sequence of events. A type of software sabotage.
time bomb: A logic bomb that is triggered by a time-related event.
spyware: Technology that collects information from computer users without their knowledge or consent.
tracking software: A spyware application program, also called a spybot, that gathers user information and communicates it to an outsider via the Internet.
spybot: A spyware application program, also called tracking software, that gathers user information and communicates it to an outsider via the Internet.
drive-by download: A spyware download onto your computer that occurs simply by visiting certain Web sites.
hackers: Someone who uses computer skills to gain unauthorized access to computer systems. Also sometimes used to refer to a particularly talented, dedicated programmer.
cracking: Unauthorized access and/or vandalism of computer systems; short for criminal hacking.
phreaking:
DoS attacks: (Denial of Service attacks)--> A type of computer vandalism that bombards servers and Web sites with so much bogus traffic that they’re effectively shut down, denying service to legitimate customers and clients.
DDos: (Distributed Denial of Service)--> A denial of service attack in which the flood of messages comes from many compromised systems distributed across the Net.
malware: Malicious software, especially destructive programs such as the viruses, worms, and Trojan horses devised and spread by computer saboteurs.
virus: Software that spreads from program to program, or from disk to disk, and uses each infected program or disk to make copies of itself. A form of software sabotage.
macro virus: Viruses that attach to and are transmitted through macros embedded in documents; usually spread via email.
email virus: Viruses spread via e-mail.
worms: Programs that use computer hosts to reproduce themselves. Worm programs travel independently over computer networks, seeking out uninfected workstations to occupy. A form of software sabotage.
trojan horse: A program that performs a useful task while at the same time carrying out some secret destructive act. A form of software sabotage.
logic bomb: A program designed to attack in response to a particular logical event or sequence of events. A type of software sabotage.
time bomb: A logic bomb that is triggered by a time-related event.
spyware: Technology that collects information from computer users without their knowledge or consent.
tracking software: A spyware application program, also called a spybot, that gathers user information and communicates it to an outsider via the Internet.
spybot: A spyware application program, also called tracking software, that gathers user information and communicates it to an outsider via the Internet.
drive-by download: A spyware download onto your computer that occurs simply by visiting certain Web sites.
hackers: Someone who uses computer skills to gain unauthorized access to computer systems. Also sometimes used to refer to a particularly talented, dedicated programmer.
cracking: Unauthorized access and/or vandalism of computer systems; short for criminal hacking.
phreaking:
DoS attacks: (Denial of Service attacks)--> A type of computer vandalism that bombards servers and Web sites with so much bogus traffic that they’re effectively shut down, denying service to legitimate customers and clients.
DDos: (Distributed Denial of Service)--> A denial of service attack in which the flood of messages comes from many compromised systems distributed across the Net.
Monday, January 4, 2010
FLASHCARDS (words)
network: A computer system that links two or more computers.
wireless network: A network in which a node has a tiny radio or infrared transmitter connected to its network port so it can send and receive data through the air rather than through cables.
Ethernet: A popular networking architecture developed in 1976 at Xerox.
Wi-Fi: A popular wireless LAN technology that allows multiple computers to connect to a LAN through a base station up to 150 feet away. Often referred to as 802.11b.
wireless access point: A communication device, typically connected to a wired network that is used to create a wireless network.
LAN: Local Area Network--anything in one home, really small area.
MAN: Metropolitan Area Network--less than 30 miles range.
WAN: Wide Area Network--biggest network, any network over 30 miles.
node: Each computer and shared peripheral on a local-area network.
routers: Programs or devices that decide how to route Internet transmissions.
fiber-optic cable: High-capacity cable that uses light waves to carry information at blinding speeds.
client: any part of the network that receives data.
host: any part of the network that sends data.
server: Offers many users access to the same information.
access: Physical proximity to a person, or knowledge about that person, a common theme in privacy discussions.
access permissions:
spam: Internet junk mail.
phishing: The use of a deceptive email message or Web site to lure a person into divulging credit card numbers or other sensitive information.
login: A one-word name that you type to identify yourself when connecting—logging in—to a secure computer system, network, or email account. Sometimes called login name or alias.
password: The most common security tools used to restrict access to computer systems.
firewall:
VPN:
sysadmin:
work station: A high-end desktop computer with massive computing power, though less expensive than a minicomputer. Workstations are the most powerful of the desktop computers.
UPS:
EDI:
blogs: Short for Web log, a personal Web page that often carries diary-like entries or political commentaries. Blogs are fast proliferating as new software allows users to create Web pages without having to learn the technical details of HTML and Web authoring.
wiki: A Web site that lets anyone with access to a Web browser to modify its pages. The best-known example is Wikipedia.
asynchronous communication: Delayed communication, such as that used for newsgroups and mailing lists, where the sender and the recipients don’t have to be logged in at the same time.
real-time communication: Internet communication that enables you to communicate with other users who are logged on at the same time.
chat room: Public real-time teleconference.
IM: Instant Messaging
bps: (bits per second) The standard unit of measure for modem speed.
GPS: A device that can use Global Positioning System signals to determine its location and communicate that information to a person or a computer.
Internet telephony: A combination of software and hardware technology that enables the Internet to, in effect, serve as a telephone network. Internet telephony systems can use standard telephones, computers, or both to send and receive voice messages.
VoIP: (voice over IP) A protocol that allows the Internet to be used to make voice telephone calls.
video teleconference: Face-to-face communication over long distances using video and computer technology.
voice mail: A telephone-based messaging system with many of the features of an email system.
NOS: (Network Operating System) Server operating system software for a local-area network.
wireless network: A network in which a node has a tiny radio or infrared transmitter connected to its network port so it can send and receive data through the air rather than through cables.
Ethernet: A popular networking architecture developed in 1976 at Xerox.
Wi-Fi: A popular wireless LAN technology that allows multiple computers to connect to a LAN through a base station up to 150 feet away. Often referred to as 802.11b.
wireless access point: A communication device, typically connected to a wired network that is used to create a wireless network.
LAN: Local Area Network--anything in one home, really small area.
MAN: Metropolitan Area Network--less than 30 miles range.
WAN: Wide Area Network--biggest network, any network over 30 miles.
node: Each computer and shared peripheral on a local-area network.
routers: Programs or devices that decide how to route Internet transmissions.
fiber-optic cable: High-capacity cable that uses light waves to carry information at blinding speeds.
client: any part of the network that receives data.
host: any part of the network that sends data.
server: Offers many users access to the same information.
access: Physical proximity to a person, or knowledge about that person, a common theme in privacy discussions.
access permissions:
spam: Internet junk mail.
phishing: The use of a deceptive email message or Web site to lure a person into divulging credit card numbers or other sensitive information.
login: A one-word name that you type to identify yourself when connecting—logging in—to a secure computer system, network, or email account. Sometimes called login name or alias.
password: The most common security tools used to restrict access to computer systems.
firewall:
VPN:
sysadmin:
work station: A high-end desktop computer with massive computing power, though less expensive than a minicomputer. Workstations are the most powerful of the desktop computers.
UPS:
EDI:
blogs: Short for Web log, a personal Web page that often carries diary-like entries or political commentaries. Blogs are fast proliferating as new software allows users to create Web pages without having to learn the technical details of HTML and Web authoring.
wiki: A Web site that lets anyone with access to a Web browser to modify its pages. The best-known example is Wikipedia.
asynchronous communication: Delayed communication, such as that used for newsgroups and mailing lists, where the sender and the recipients don’t have to be logged in at the same time.
real-time communication: Internet communication that enables you to communicate with other users who are logged on at the same time.
chat room: Public real-time teleconference.
IM: Instant Messaging
bps: (bits per second) The standard unit of measure for modem speed.
GPS: A device that can use Global Positioning System signals to determine its location and communicate that information to a person or a computer.
Internet telephony: A combination of software and hardware technology that enables the Internet to, in effect, serve as a telephone network. Internet telephony systems can use standard telephones, computers, or both to send and receive voice messages.
VoIP: (voice over IP) A protocol that allows the Internet to be used to make voice telephone calls.
video teleconference: Face-to-face communication over long distances using video and computer technology.
voice mail: A telephone-based messaging system with many of the features of an email system.
NOS: (Network Operating System) Server operating system software for a local-area network.
Tuesday, December 29, 2009
Answer Questions from Videos
1- define biometrics.
-> a method of identifying individuals based on biological properties. ex: fingerprint DNA matching voice recognition who uses biometrics. airports use scanning technology.
2- list and explain a use of a biometrics system in each area of impact.
-> How biometrics can be used in each area of impact:
-Business and Employment: People who work in businesses can use biometrics to keep their information secure and confidential.
-Education: Teachers can use biometrics to open their accounts and student's grades.
-Health:
-Arts, Entertainment, and Leisure:
-Science and Environment:
-Politics and Government: The government obviously holds a lot of information and "top secret" things, so they'll definitely have to use biometrics if they don't use them already to keep everything secured.
3- explain how one type of biometric system works.
->
3- who approves/disapproves of the use of biometrics?
-> People who approve are people who think that biometrics supports the security and government and other things.
People who are against it are people who think that biometrics will be misused by government and so forth.
4- explain 3 concerns regarding the use of the biometrics system.
->
5- explain 3 advantages to using the biometrics system.
-> Security
6- what is the benefit of using biometrics as shown in the last clip?
->
-> a method of identifying individuals based on biological properties. ex: fingerprint DNA matching voice recognition who uses biometrics. airports use scanning technology.
2- list and explain a use of a biometrics system in each area of impact.
-> How biometrics can be used in each area of impact:
-Business and Employment: People who work in businesses can use biometrics to keep their information secure and confidential.
-Education: Teachers can use biometrics to open their accounts and student's grades.
-Health:
-Arts, Entertainment, and Leisure:
-Science and Environment:
-Politics and Government: The government obviously holds a lot of information and "top secret" things, so they'll definitely have to use biometrics if they don't use them already to keep everything secured.
3- explain how one type of biometric system works.
->
3- who approves/disapproves of the use of biometrics?
-> People who approve are people who think that biometrics supports the security and government and other things.
People who are against it are people who think that biometrics will be misused by government and so forth.
4- explain 3 concerns regarding the use of the biometrics system.
->
5- explain 3 advantages to using the biometrics system.
-> Security
6- what is the benefit of using biometrics as shown in the last clip?
->
Thursday, December 24, 2009
HW: Multiple Choice Questions and Review Questions 7-9 (pgs. 96-97)
Multiple Choice Questions (pg. 96-97)
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Review Questions 7-9 (pg. 97)
7) What are the advantages of nonimpact printers, such as laser printers, over impact printers? Are there any disadvantages?
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8) Some commonly used peripherals can be described as both input and output devices. Explain.
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9) What is the difference between sequential-access and random-access storage devices? What are the major uses of each?
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Review Questions 7-9 (pg. 97)
7) What are the advantages of nonimpact printers, such as laser printers, over impact printers? Are there any disadvantages?
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8) Some commonly used peripherals can be described as both input and output devices. Explain.
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9) What is the difference between sequential-access and random-access storage devices? What are the major uses of each?
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pg. 97 Review Questions #s 5-6
Review Questions
5) What are the advantages of CRT monitors over LCDs?
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6) Name at least two hardware devices that use LCDs because using a CRT would be impractical.
- Computer screen/Laptop:
- Projector:
5) What are the advantages of CRT monitors over LCDs?
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6) Name at least two hardware devices that use LCDs because using a CRT would be impractical.
- Computer screen/Laptop:
- Projector:
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