Final answer:
A program that tracks a user's internet usage without their permission is called spyware, which is a type of malicious software that secretly monitors and collects personal information.
Step-by-step explanation:
A program that tracks a user's internet usage without the user's permission is called spyware. Spyware is a type of malicious software that secretly monitors an individual's online activities, collects personal information, and transmits it to a third party without their consent. It can be installed on a computer or mobile device without the user's knowledge, often through deceptive techniques such as disguised downloads or email attachments.
One example of spyware is a keylogger, which records every keystroke made by the user, including passwords and credit card details. Another example is adware, which collects data on the user's browsing habits to display targeted advertisements. Spyware poses significant privacy risks and can be used for cybercrime or surveillance purposes.