Final answer:
Spyware is the type of program that installs and gathers personal information from a computer without permission or knowledge of the user.
Step-by-step explanation:
The type of program that installs and gathers personal information, including password and account information, from a computer without permission or knowledge of the user is spyware.
Spyware is malicious software that can be installed on a computer without the user's consent or knowledge. It is designed to secretly monitor and gather information about the user's activities, including personal and sensitive data.
For example, spyware can record keystrokes to capture passwords, usernames, and other account information. It can also track browsing habits, collect personal information, and even remotely activate a computer's camera and microphone without the user's consent.