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. A hazard is anything that could be harmful to a person 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 inside the computer, there are ESD hazards to electrical equipment and risks of severe shock from components in the power supply and CRT monitors.