With hacking attacks going to the next level, most websites have become more vigilant to shield every possible cyber-attack. Captcha is something that has been around for some time now and several top websites incorporate captcha. Captcha is a challenge-response test provided over the website. This is used to determine if the user is a human or an automated bot. Captcha was first formed in 1997 and was officially introduced in 2003 by John Langford, Nicholas Hopper, Luis von Ahn, and Manuel Blum.

A Web browser also referred commonly as "browser" is a software which is used to access World Wide Web (www). The browser identifies individual URLs and displays the corresponding page on the user's device.

The web has evolved several changes since its inception, starting from Web 1.0 which forms the most rudimentary form of a web. Next going on to more advanced forms of Web which were called as Web 2.0.

JSP is also referred as Java server pages. It is a language used for web development and is similar to PHP or ASP. It is used extensively for dynamic web page generation. JSP was first released in 1999 by Sun Microsystems.

Dark web forms a part of the Deep web which cannot be indexed by search engines. These are a collection of websites that are publicly visible but can hide the IP addresses. This makes tracking of such websites difficult. A search engine will never be able to find such websites.

World Wide Web, also commonly referred to as www is a term we frequently hear about. Though this has become an integral part of our lives, many still feel it is same as the Internet. However, Internet and World Wide Web are closely linked and are two different entities. Internet refers to a global network of computers interconnected in a specific way. The World Wide Web or www is a collection of web resources and pages found over this network. To access the world wide web, a web browser is needed.

A webmaster is the position given to a person responsible for maintaining one or more websites of a company. The position came about for the need of having someone to fulfill these duties and after once it was required for there to be a single point of contact for those who administered a domain and as such, the "webmaster" title unofficially became tied to "web administrator".

As the prominence of technology continues, the advent of mobile technology will continue to grow and expand as well. For many developers, this means learning and understand mobile development intimately and being capable of not only identifying the differences between mobile web development and normal web development; but also knowing and understanding why these differences exist.

Web2.0 refers to websites on the World Wide Web (WWW) which focus on user-generated content, usability and ease of use, and interoperability between one website and other products, devices, or systems. To be perfectly clear, the term does not refer to an update of any specific language or application but rather; a change in the process involved with how developers web pages were created and used.

Cascading Style Sheets (CSS) is a style sheet language used for describing and defining the presentation of a document written in some markup language such as Hypertext Markup Language (HTML). As a matter of fact, next to HTML and JavaScript (JS), CSS is one of the core parts of the World Wide Web (WWW) to create visually engaging websites and user interfaces for both web applications and mobile applications.