What is the most common type of spyware? According to a report from cybersecurity firm Kaspersky, the most common type of spyware is a trojan called "Trojan-Spy. https://malwarezero.org/what-are-the-types-of-spyware/ As soon as set up on a victim's computer system, the trojan can be used to remotely manage the device and collect information from it.Spyware is a type of malware that is installed on a computer tool without the user's understanding or permission. Spyware can be made use of to gather sensitive details, such as login qualifications and monetary data, and can be utilized to track an individual's online task. Spyware can be hard to get rid of, as well as can frequently cause identification burglary or other major crimes.