What is the most common type of spyware?

There are numerous types of spyware, but the most common is most likely adware.  https://9tolife.co.uk/?p=2059 Adware is a type of software that is used to track a user's online activity and screen ads.  here It can be installed on a computer without the user's knowledge, and it can be tough to eliminate. Other common types of spyware include keyloggers, which are used to track a user's keystrokes, and Trojans, which are used to take personal information.