One of the more recent crazes on the Internet is online auctions, where people can offer junk, antiques, or collector’s items for sale to anyone who wants to bid on them. But be careful! Besides having to deal with fraudulent bids from people who have no money or intention of buying an item up for auction, consumers have to watch out for con artists selling their own fraudulent items. The simplest con game is to offer an item for auction that does....

Just because Linux is distributed for free, it doesn’t mean the software is not copyrighted. Linux has been registered as copyrighted under the GNU General Public License (GPL), which is known in the programming community as a copyleft instead of copyright because of its nature. The GPL allows you to redistribute the Linux software, along with the complete source code, to anyone who wants it. However, the original owner of the components retains the copyrights to the sof....

When we think of Trojans, we normally think of the huge wooden horse that the Greeks gifted the city of Troy, in which they had secretly hidden a small number of their warriors. When the Trojans took the horse into the city the soldiers emerged and opened the gates to the cities enemies. Computer trojans are based on the same idea; what can appear to be useful program or harmless site can be hiding a small Trojan program that once it has infected your computer opens a secret b....

In 2001, Safeware(http://www.safeware.com) estimated that thieves stole over 500,000 laptops for that year but only 15,000 desktop computers. Laptops make the most obvious and enticing targets because of their small size, light weight, and high resale value, so if you’re traveling with a laptop in public, do your best to hide it. Walk through any airport and you’ll see many people carrying their laptops in distinctive black carrying cases, easily....

DHTML, or Dynamic HTML, is the result of combining HTML, CSS, and JavaScript: it uses scripts to dynamically modify the style — which may include the position and visibility — of document elements. In the W3C and the IE 4 DOMs, every document element has a style property that corresponds to the HTML style attribute that specifies inline styles. Instead of referring to a simple string, however, the style property refers to a Style object t....