| A | B |
| Black hat | Bad hacker who creates malicious programs to break into computers and do harm. |
| Carpal Tunnel Syndrome | Common repetitive motion disorder that effects the nerves of the wrist and can make normal computer use impossible. |
| Data loss | Inevitable result of continued use of a computer where files or other data is corrupted and lost. |
| Ergonomics | Use of scientific information about the human body to design healthier work environments |
| Eye strain | Problems caused when computer users stare at a computer screen with a bright light source directly behind it; can cause serious eye damage. |
| Firewall | Hardware device or program that prevents unwanted access and blocks unwanted programs like viruses from entering a network |
| Hacker | Skilled computer programmers who make applications do something the original programmer did not intend. |
| Overloaded outlet | Situation where too many things are plugged into an outlet; creates a fire hazard |
| Phishing | E-mail attack or scam designed to gather information from a user while appearing to be safe |
| Repetitive motion disorder (RMD) | Muscular disorders that come from repeated motions like typingand can cause a great deal of pain and disability. |
| Security patch | Addition to an operating system or application that plugs a security hole in the software's code. |
| Spoofing | When someone presents themselves as someone else in order to trick a user, either through e-mail or a bogus Web site |
| Spyware | Malicious program installed without the user’s knowledge while surfing the Internet that tracks the user’s activities and gathers other information |
| Strong password | Password with at least eight characters containing a mixture of uppercase and lowercase letters, numbers and punctuation or symbol characters. |
| Virus | Program specifically written to cause harm to your data and operating system |
| Weak password | Password that contains anything that could be easy to guess, such as birthdays, names, or strings of fewer than eight characters |
| Worm | Malicious program that travels from computer to computer, usually through networks, copying itself over and over; can overload computers and networks. |