U-Z

UDP (User Datagram Protocol)

One of the protocols that comprise the TCP/IP protocol suite that is designed to establish connectionless communication between networked devices.

virus

A software program designed to infect its host computer and cause an assortment of damage ranging from a simple practical joke to the deletion of the entire contents of your hard drive.

wannabee

An individual who is in the beginning stages of his or her hacking career and who is dangerous mostly because of inexperience.

whacker

A person who engages in hacking activities without possessing the skill set of real hackers. Whackers are less sophisticated in their techniques and capability to penetrate systems.

winsock

A component of Windows operating systems that manages TCP/IP connections with Internet applications.

worm

A software program designed to propagate itself and sneak its way onto your computer where it hides until a predetermined date or event occurs, at which time it activates itself and performs whatever malicious action it was designed to do.

zonealarm

A software-based personal firewall that you can download from the Internet for free personal use and that provides many of the same features found in other commercially available software-based personal firewalls.