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Definition of security measures: The precautionary measures taken toward possible danger or damage. Explanation : Data backup A data backup is the result of copying or archiving files and folders for the purpose of being able to restore them in case of data loss. Data loss can be caused by many things ranging from computer viruses, hardware failures, file corruption, system failure or theft.  If you are responsible for business data, a loss may involve critical financial, customer, and company data.  If the data is on a personal computer, you could lose financial data and other key files, pictures, music and others that would be hard to replace. Cryptography Anti-virus Anti-virus software is a program or set of programs that are designed to prevent, search for, detect and remove software viruses and other malicious software like worms, Trojan horses, adware and more. If and when a virus is detected, the computer displays a warning asking what act...

Definition of computer security risk: Any event or action that could cause a loss of or damage to computer hardware, software, data, information or processing capability. Explanation of computer security risk: Other intruders indicate some evidence of their presence either by leaving a message or by deliberately altering or damaging data. Any illegal act involving a computer generally is referred to as a computer crime. Cybercrime refers to online or Internet-based illegal acts. Software used by cybercriminals sometimes is called crimeware. Type of malicious code Discription Example Computer virus A potentially damaging computer program that effects, or infects, a computer negatively by altering the way the computer works without the user's knowlegde or permission. Melissa, Tequila, Cascade, Invader Worms Malicious-logic program that copies itself repeatedly. Jerusalem, Sobig, Nimda, Morris Worm Trojan Horse A program that hides within or looks like a legitimate ...

AREA OF COMPUTER ETHICS Definition of Computer Ethics: The moral guidelines that govern the use of computers, mobile devices and information systems. a)Information Accuracy One of the concern because many users access information maintained by other people or companies, such as on the Internet. b)Green computing  the environmentally responsible and eco-friendly use of computers and their resources. In broader terms, it is also defined as the study of designing, manufacturing/engineering, using and disposing of computing devices in a way that reduces their environmental impact. c)Codes of Conduct Written guideline that helps determine whether a specific action is ethical/unethical or allowed/not allowed. d)Information Privacy The right of individuals and companies to deny or restrict the collection, use, and dissemination of information about them. e)Intellectual Property Unique and original works such as ideas, inventions, literary and artistic works, proce...

Netiquette Netiquette, or net etiquette, refers to etiquette on the Internet.   Is the code of acceptable behaviours users should follow while on the Internet or online or cyberspace. It is the conduct expected of individuals while online Electronic communication lacks the facial expression, gestures and tone of voice to convey your meaning. It’s easy to misinterpret meaning of words. Remember, when you communicate through cyberspace your words are written . 

Explanation types of website Portal-A web site that offers variety of internet services from single, convenient location. Example of portal : Business-Contains content that promotes or sells products or services. Example of business: Blog-An informal web site consisting of time-stamped articles, or posts in a diary or journal format, usually listed in reverse chronological order.  Example of blog : Wiki-A collaborative web site that allows users to create, add to, modify, or delete the web site content via their web browser.  Example of wiki : Online Social Network-Encourages members in its online community to share their interests, ideas, stories, photos, music and videos with other registered users. Example of online social network :

INTERNET SERVICES Types of internet service: World Wide Web (www) E-mail Instant Messaging Voice Over Internet Protocol (VolP) Message Board File Transfer Protocol 1. World wide web- consists of a worldwide collection of electronic documents.Each electronic documents on the web  is called a web page which can contain text, graphics,animation,audio, and video.Web pages usually have built in connections to other documents. 2. E-mail- short for electronic mail.Transmission of messages and files via a computer network.An e-mail address is a unique name that consits of a user name that identities the user. Example : amir@gmail.com 3. Instant Messaging- A real time comunication service that notifies you when one or more people are online and allows you to exchange messages or files or join a private chat room with them.   Popular IM software includes:  AIM (AOL Instant Messenger)  Google Talk  MySpace IM  Windows Live Messenger Y...