H


Hacker

An individual who works with computers at a low level, such as directly in hardware design or with software like drivers (hardware or software), especially in the area of security. A hacker normally possesses specialty software or other tools that allow easier access to the target hardware or software application or network. The media defines two types of hackers, which include those that break into systems for ethical purposes and those that do it to damage the system in some way. The proper term for the second group is crackers (see Cracker for details). Some people have started to call the first group “ethical hackers” or “white hat hackers” to prevent confusion. Ethical hackers normally work for security firms that specialize in finding holes in a company’s security. However, hackers work in a wide range of computer arenas. For example, a person who writes low-level code (like that found in a device driver) after reverse engineering an existing driver is technically a hacker. The main emphasis of a hacker is to work for the benefit of others in the computer industry.

Hierarchical

1. A method of arranging data within a database that relies on a tree-like node structure, rather than a relational structure. 2. A method of displaying information on screen that relies on an indeterminate number of nodes connected to a root node. 3. A chart or graph in which the elements are arranged in ranks. The ranks usually follow an order of simple to complex or higher to lower.

HTML

See Hypertext Markup Language

Hypertext Markup Language (HTML)

1. A data presentation and description (markup) language for the Internet that depends on the use of tags (keywords within angle brackets <>) to display formatted information onscreen in a non-platform-specific manner. The non-platform-specific nature of this markup language makes it difficult to perform some basic tasks such as placement of a screen element at a specific location. However, the language does provide for the use of fonts, color, and various other enhancements onscreen. There are also tags for displaying graphic images. Scripting tags for using scripting languages such as VBScript and JavaScript are available, although not all browsers support this addition. The <OBJECT> tag addition allows the use of ActiveX controls. 2.One method of displaying text, graphics, and sound on the Internet. HTML provides an ASCII-formatted page of information read by a special application called a browser. Depending on the browser’s capabilities, some key words are translated into graphics elements, sounds, or text with special characteristics, such as color, font, or other attributes. Most browsers discard any keywords they don’t understand, allowing browsers of various capabilities to explore the same page without a problem. Obviously, there’s a loss of capability if a browser doesn’t support a specific keyword.




.Net Development Security Solutions
.NET Development Security Solutions
ISBN: 0782142664
EAN: 2147483647
Year: 2003
Pages: 168

flylib.com © 2008-2017.
If you may any questions please contact us: flylib@qtcs.net