Like all other types of malicious software, spyware is installed on your computer without your consent. This information is then forwarded to the spyware author, who can either use it for their own personal gain or sell it to a third party.
Some types of spyware also record your passwords, login credentials, and credit card details.
Spyware is malicious software that infects computers and other internet-connected devices and secretly records your browsing habits, the websites you visit, and your online purchases.