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web application development

Web applications development done by web developers having knowledge of web development tools like HTML, XML, Flash, Perl, CSS, PHP, JSP, ASP.NET etc for developing web pages. Web application development services can be varied or specific, depending on the needs of the Web pages involved. Web applications are platform-independent applications that can be deployed on your intranet or the World Wide Web.

For web based application development highly experienced professionals with extraordinary skills are required who involves you to conceptualize your project. Using in-depth knowledge along with latest technologies and innovations in area of web application services develops a business model that helps you grow. Web site development project is divided into several stages,

Software Requirement Specification (SRS)
preparation,
Project Plan,
Functional Prototyping ,
Web Application Development,
Testing Technical Support,
Maintenance,

While web application development, web developers should design a clean site and provide ease of navigation. Web design

should be simple and attractive even for complex requirements. During custom web application development idea should be that website evolves as per time, which reduces the maintenance cost and generates more profit.

Custom Web site applications can be developed for a wide range of industries such as Information Technology & Communications, Construction & Manufacturing, Automotive/Transportation, Financial Services, Healthcare, Education, Government Organizations and NGO's to, Food & Beverage, Retail and many more.

The common type for Web application development involves e-commerce sites. e.g. Online Shopping Site. During ecommerce website development, web developers should always anticipate different kinds of unusual customer behavior, and should see that server and "shopping cart" do not break down. One more area in which web application development can be done is web based office applications. Many offices nowadays use the World Wide Web to conduct their business operations, including all kind of accounting and tracking functions. Conference calls via the Web are also popular, as are file transfers. Web application development for all of these practices is specific and in high demand.

Antivirus software Part 1

Nowadays more and more people are using a computer. A lot of them use it at their work place, but an increasing number of computer users have also discovered the need to have a computer at home. At the same time the number of Internet surfers increased. This is a good thing because people are realizing the advantages offered by the world of technology. As soon as they discover this, they start using computers and the Internet more and more, but at the same time not considering the threats that are coming in from all sides. They should know that if you don’t protect yourself, nobody will. These threats are now coming from everywhere and they are growing in number and complexity. First threats of this kind were the viruses. At first, viruses were not that harmful. They were designed to perform a simple task, like flashing a single message onto the user's computer screen. Also the spread rate was slow, because not many people were connected to the Internet. But now the majority of viruses are programs intentionally written to obstruct with, or harm other programs or computer systems. And they are spreading very fast.

Many companies and people have had a lot of troubles because of these viruses. And so the need for antivirus software was born. At first one very simple antivirus appeared and this was enough. Now, as the threat is growing antivirus software are becoming a lot more complex. Some of them have also included a firewall so to better protect the users. In order to increase the competition, other antivirus software producers have also come up with a wonderful idea: to offer free scan online. This was a big help for people that are frequently using a computer mostly for their personal use, meaning it is not attached to a network and uses the Internet only from time to time. Now, they don’t have to spend a lot of money to buy antivirus software that will be used very rarely.

Most of these antivirus programs have to be bought in order for you to use them at their full capacity. Also you have the option to test a so called “free trial version”. These trial versions include all or most of the software’s features, and are available to be checked out by the user for a short period of time, usually 30 days. After these 30 days, the program can no longer be used. Other antivirus software producers use another method; they offer a free trial version that you can keep forever. But it is not fully operational, meaning some of the options of the program cannot be used as they are not activated. After you have tried a program and you consider it is fit for your need, then you’ll have to buy it to protect your computer at its full capacity.

Hackers - They can get you where you live

Most people have a preconceived notion that if there computer has a firewall or the latest anti-virus protection they are completely safe from hackers. This is simply not true.

It doesn’t matter if you have a firewall or not. Sure, it blocks some unwanted intrusion to your computer but it can’t block them all because of the very nature of the system. Just like a tiny bug that comes from outside and enters your home all it needs is the smallest opening and its there! Web traffic has to pass through firewalls to access your computer and even the best firewalls cannot process all the hugh amounts of inbound information.
Before a hacker can ‘hack’ they have to talk to a computer in its own native tongue. Much of the time it’s HTML (hypertext markup language), but it can be Java, XML, Perl or a number of others.

Most successful hackers have much more than a basic knowledge of computer languages as well as how security systems function. A hacker can be anybody with enough knowledge of computer languages and a great deal of computer savvy to look at a URL string and read between the lines. All a hacker needs to do is ‘request’ information from web sites, servers or PCs using there unique knowledge of computer languages by using simple-well placed codes that may seen trivial yet extract a great deal of what you thought was secure information about you or your business. A hacker can, with persistence get administrative control of a web page and do just about anything to it like changing colors, graphic, text or Meta tags.

The only tools a hacker needs is an internet browser and a target URL. Broadly speaking a URL structure is: Protocol://sever/path/to/resource?parameters This roughly translates to: http://targetsite.com/directory/files
When you open your browser to a web page what’s viewed is what the browser interprets and displays. There is an ocean of information behind the pictures and text. On a typical web page, not readily available to the human eye but can be found none the less is information such as the HTML source code, source code keywords, hidden parameters, hyperlinks and a whole lot more. The more a hacker knows the better they can plan an attack. These people are very good at tricking a web server to release a source code for an application or script without it being executed. With enough prodding and poking at a web server they can view the original source code of the HTML content generated by the script. The method of attack will depend on what the hacker learns from the information accumulated from the server side, browser or client side.

Protocols

HTTPS is a protocol used for encrypted traffic within an HTTP stream. HTTPS is mainly used by sites that offer security where credit card and bank account numbers are used. Another level of security is the Secure Sockets Layer set of protocols (SSL) that has become a standard way to communicate between a web browser and a web site when a high level of security is needed. Not only that, but it can help secure e-mail, file downloads, and chat line conversations by using File Transfer Protocols (FTP) that works with SSL. Without this type of security in place it is relatively easy for someone to read the information you are transmitting. The thing to know here is that SSL only secures information in transit (between computer and website). It does not and will not guarantee security at your end and the site you are viewing! You will have to trust security measures at the site you are viewing and rely on your own computers virus and firewall protection. SSL uses a symmetric key cryptography for encryption, meaning the client and server uses the same key to encrypt and decrypt communication. If a hacker can decode the encryption key they can decipher the message coming in and going out.

Cookies

Many sites you visit will set a cookie on your system when you view that site. The purpose of cookies is to give you easier and faster access to the sites resources and to identify you later if you choose to purchase a product from them. This cookie will keep your personal information such as name, address and credit card number on their file in case you visit them again at a later date. The site itself has its own cookie system with the same personal information so when some user logs in they know who they are, what was ordered previously and what credit card was used so they can give you the ‘use same and credit card?’ option. Because a lot of websites have security vulnerabilities hackers can view there cookies and retrieve credit card numbers and other personal info. Most web browsers let a user delete cookies on there system, either all of them or manually but they are still on the website visited. A common problem is if you punch in http://buyitnowsite.com and it sets up a cookie on your system, the creator of that cookie may have specified the domain type as site.com rather than buyitnow.com. Your browser then will offer up that cookie to any page in the same domain like virusdownloadsite.com (for example) or any site that you visit which may not have good intentions for you. This can lead to other sites having access to your personal information not intended for them. This could have been prevented if the technician who created that cookie made it specific enough to include the whole site name (buyitnow) in the coding. Really cookies are not intended to store information like user names and passwords, but unfortunately it is a common practice with websites and a hacker can view this information when infiltrating them. The best way to combat against cookie threats is through cookie management software that gives you full control over the use of cookies, which should include:

* Disable the sending and saving of cookies
* Notification before a cookie is sent
* Control of sending and receiving cookies based on the domain
* Look at and delete the contents of cookies

Most internet browser should give you a whole lot more options for cookies in the advanced tab or you can buy cookie software to have complete and easy access over all cookies.
I have mentioned here only a few areas of concern on protecting computer systems and internet browsing but there are others left untouched due to space ( one could write a book on the subject) but I hope you can see we are at more risk than you think. Because many of us have so easy access to the internet like an ‘always on connection’ computers and servers will always be a target for hackers. Also the speed of connecting increases the risk of attack and the harder it will be to filter that access and make it harder for hackers. Even though we may never be completely safe from hackers there are things we can do to make there job harder. Never store personal information (passwords, credit card numbers) on your PC; instead use a floppy dick or CD for your private information and eject it from your PC when done. A general rule on firewalls is to block all incoming traffic that you didn’t initiate. Don’t run applications you are not familiar with and take what you download! Most important is to backup everything on your computer and make a bootable disk that you know is clean from infection.

Software For Creating E-book Covers

So you have decided that you want to make a new e-book for you site and it’s business or service. This is an excellent idea, and can easily generate a large amount of profit if it is done right. Along with the usual preview chapters and index, you have the beef of the matter. Well have you ever considered exactly how you are going to package the whole deal, to make it look good enough to sell?

If you want to go with something spicy and original, you can bet you are going to pay an arm and a leg for someone such as a designer to do it for you. This in turn eats at your products profits to begin with. What happens if you have no idea on how to even make an e-book cover? Do you know the coding? Do you know how to format it? If the answers are no, which no offence is more than likely, you will need some help. Why however would you want to pay a large sum of money to someone else to do it, if there is no guarantee of success with it? This is where the new generation software comes into play, not only can it be a snap to run, you will be up in no time with your e-book in hand ready for the market place.

The fact remains true; there are a great many e-book cover software programs on the market. What you get with the program and the ease of use is what truly separates the good ones from the bad. It is true that you will get a poor product if you do not invest from the start; you get what you pay for. The best way to look at it is this way, if you spend a larger sum of money now and get a good product this product will sell. On that note if you make an e-book with a great title page, and can sell it for $45.99 online, within a couple of sales it is already paid for itself. Then you turn around and make another e-book at the same value, and you guessed it you are now in the black and have the profits to prove it.

Another major benefit to this type of software is this, if your business has been floundering the last little while you have something else to fall back on. This is a very lucrative business, where some designers are charging up to $250.00 per cover page. One cover page made for someone else and the software is again paid for. This could easily be a turn around, or an extension to the business you already have.

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Edmonton Web Design Pure Logic Solutions Inc. is Edmonton's leader in web design, graphic design, ecommerce, web applications, and software development. We offer reliable
internet and software solutions in Edmonton Alberta and worldwide.

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