A hazard may refer to any of the following:
1. For computers, a hazard is anything that poses a threat to a computer's security, performance, or functionality. Examples of computer hazards are malware, viruses, computer hackers, corrupted system files, and defective hardware.
2. When referring to the person using the computer a hazard is anything that could be harmful to the user as they use a computer. For example, using the keyboard and mouse improperly or too much can cause carpal tunnel and not having the proper posture can cause all types of pain and issues over time. While working inside the computer, there are also ESD hazards to the electrical equipment and even the risk of serious shock from components contained in the power supply and CRT monitors.