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Showing posts from December, 2008

How to solve Browser Hijacker Problem ?

Here's a series of steps by step on how you can take to use Hijack This to remove a browser hijack. So Before you start please Download and install Hijack This STEP 1 Use Safety Stuff to backup your documents and create a system restore point. STEP 2 Check for suspicious startup items You can use Hijack This to clean out hijacked items from Microsoft's Internet Explorer (redirections due to spyware), however they will return if the executable program causing it is not removed. a.Click on Start> Run and type " msconfig " and click OK. b. Select the "Startup" tab. c. Uncheck any items you don't recognize. Note that many legitimate programs will appear here too.Most spyware will load from this area. If unsure if a particular item is legitimate or not, do a Google search on the .exe file name that loads. The only caveat here is that some spyware .exe files get a randomly generated name, so a search will not identify them. You can

What is browser hijacker ?

A browser hijacker (sometimes called hijackware ) is a type of malware program that alters your computer's browser settings so that you are redirected to Web sites that you had no intention of visiting. Most browser hijackers alter default home pages and search pages to those of their customers, who pay for that service because of the traffic it generates. More virulent versions often: add bookmarks for pornographic Web sites to the users' own bookmark collection; generate pornographic pop-up windows faster than the user can click them shut; and redirect users to pornographic sites when they inadvertently mistype a URL or enter a URL without the www. preface. Poorly coded browser hijackers -- which, unsurprisingly, are common -- may also slow your computer down and cause browser crashes. Browser hijackers and the pornographic materia l they often leave in their wake can also be responsible for a variety of non-technical problems. Employees have lost jobs because of cont

Types of broadband connection

Digital Subscriber Line (DSL) DSL is a wireline transmission technology that transmits data faster over traditional copper telephone lines already installed to homes and businesses. DSL-based broadband provides transmission speeds ranging from several hundred Kbps to millions of bits per second (Mbps). The availability and speed of your DSL service may depend on the distance from your home or business to the closest telephone company facility.    The following are types of DSL transmission technologies :   Asymmetrical Digital Subscriber Line (ADSL)   – used primarily by residential customers, such as Internet surfers, who receive a lot of data but do not send much. ADSL typically provides faster speed in the downstream direction than the upstream direction. ADSL allows faster downstream data transmission over the same line used to provide voice service, without disrupting regular telephone calls on that line.    Symmetrical Digital Subscriber Line (SDSL)  – used typically by businesse

What is broadband?

What is broadband? The term broadband commonly refers to high-speed Internet access. The FCC defines broadband service as data transmission speeds exceeding 200 kilobits per second (Kbps), or 200,000 bits per second, in at least one direction: downstream (from the Internet to the user’s computer) or upstream (from the user’s computer to the Internet). How is broadband different from DIAL-UP service? - Broadband service provides higher speed of data transmission—Allows more content to be carried through the transmission “pipeline.”Broadband provides access to the highest quality Internet services—streaming media, VoIP (Internet phone) , gaming, and interactive services. Many of these current and newly developing services require the transfer of large amounts of data which may not be technically feasible with dial-up service. Therefore, -broadband service may be increasingly necessary to access the full range of services and opportunities that the Internet can offer. -Broadband is

Introducing to JavaScript (2)

It's important to understand the difference between Java and JavaScript .   Java is a full programming language developed by Sun Microsystems with formal structures, etc. JavaScript is a scripting language developed by Netscape that is used to modify web pages. Most JavaScript must be written in the HTML document between tags.You open with a tag, write your JavaScript, and write a closing tag. Sometimes, as an attribute to script, you may add “ Language=JavaScript ” because there are other scripting languages as well as JavaScript that can be used in HTML. We’ll go through some examples to demonstrate the syntax of JavaScript. To understand the workings of JavaScript, it is essential to understand a few basic programming concepts. JavaScript is object-oriented. An Object in JavaScript is a resource that has specific characteristics known as properties and provides several services known as methods and events . An example of an object is document , which represents t

Introduction to JavaScript (1)

Equipment / software We will use Notepad on Windows 98 PCs, but any test editor capable of saving documents in plain-text format will work. Any web browser can be used; we will use Netscape Navigator. Be aware, however, that there are some browsers that would handle your code differently. Handouts & class files Class handout: Introduction to JavaScript base.html cat.html demo.html dog.gif family.gif hamster.gif harry.gif logoscroll.gif logostill.gif resources.html Prerequisites We will assume you have a working knowledge of HTML tags. Introduction In this class, you'll become familiar with some concepts and terminology of JavaScript by creating some working examples. We hope you’ll learn enough that you are able to use the materials referenced at the end of this handout on your own. This course will NOT be dealing with programming fundamentals, or rigorous programming struct

What is Virtual Worlds ?

Virtual Worlds - Computer games date back to the early days of computing research. The creation of the Internet allowed game players to interact with each other. Multiuser dungeons (MUD) and multiuser shared hallucinations (MUSHs) are two types of gaming environments. Some of these programs use object-oriented programming techniques called MOOs. There are two types of Virtual World: text-based and GUI-based virtual world. Collaboration - Working with other users connected to a server. You can conduct online meetings. Allows you to share documents with others in real time. Microsoft’s NetMeeting allows collaboration.

What is Instant Messaging (IM) ?

Instant Messaging (IM) - Real-time communications service that notifies a user when people are online and then allows the user to exchange messages or files with them or join a private chat room. Many IM services also can alert you to information such as calendar appointments, weather, stock quotes or sport scores. How does it work? 1. Login to the IM server 2. server checks if any established friends, family or co-workers, called buddies are online. 3. Send instant messages to online buddy 4. instant message travels through messaging server and then to online buddy

What is Message Board ? What is Chat ?

Message Board - A popular web-based type of discussion group that does not require a newsreader. It is also called a Discussion board . Chat - A general term for real-time communication on the Internet or Web. Private chat – occurs between two individuals. Public chat – group chat area. Lurking – the practice of reading messages and not contributing to the discussion. Chat rooms – Web chat sites that use the browser client software interface to create combined text and graphic environments for chat participants. Emoticons (or smileys) are used to display humor and emotions in their messages. Netiquette – Internet etiquette suck as avoid flaming and spamming. Types of chat rooms: Voice chats, Video chats, Radio chats. Internet Relay Chat (IRC) - In 1988, developed as a multiuser program at the University of Oulu in Finland. IRC uses a client-server network model. IRC servers are connected through the Internet to form an IRC network. Original network was EFNet, wh

What is Newsgroups ?

Newsgroups - Area on the Web where users conduct written discussions about a particular subject. Also called threaded discussion. The topic categories originally were called newsgroups or forums . Usenet categories are also referred to as Internet discussion groups. Usenet was one of the first large distributed information databases in the world. A distributed database is stored in multiple physical locations, with portions of the database replicated in different locations. Newsgroups stores messages on an electronic bulletin board as articles or postings that are sorted by topic. A series of postings on a particular issue is called a thread. Usenet is a network of computers called news servers . Periodically news servers connect to each other and compare a list of articles that each currently is storing. After this comparison, each news server obtains copies of the articles it does not have. This store-and-forward process is called obtaining a newsfeed . Each news server site em

Mailing List

Mailing List - A list of names and e-mail addresses for a group of people who share a common interest in a subject or topic and exchange information by subscribing to the list. A popular way of sharing information is to join, or subscribe to, a mailing list. Information is sent to the mailing list through e-mail by posting a message to the list. Different types of e-mail software – LISTSERV, ListProc, and Majordomo. A list server runs the e-mail list software. In commercial mailing lists, advertisers send promotional materials for specific products to customers based on their expressed preferences. A list moderator moderates a mailing list to ensure that the list always receives and sends appropriate and relevant information to its members. When an individual does not moderate the list and postings are sent to list members automatically, the list is an unmoderated list . A closed list is one in which membership is not automatic. A list administrator oversees one or more maili

Electronic Mails (E-mail)

Electronic Mails (E-mail) - One of the most popular forms of business communication. Fast and inexpensive. Sent and received at any time. How does it work? 1. Create and send message 2. Your software contacts ISP mail server. 3. Mail server determines best route 4. Mail server transfers message to PO3 server. 5. When e-mail software checks for e-mail messages, message transfers from POP3 server to recipient’s computer • SMTP (Simple Mail Transfer Protocol): decides which paths your e-mail message takes. • POP (Post Office Protocol): handles incoming messages. • IMAP (Internet Message Access Protocol): used to retrieve messages from a server. • MIME (Multipurpose Internet Mail Extensions): specifies how to encode nontext data. The destination mail server’s software handles the details of distributing the message locally. The mail server holds the new message, until the recipient’s computer requests the message. Mail client software, or an e-mail program, requests the ma