What is Spyware? | UpGuard

This document is an educational overview of spyware covering definitions, common behaviors and impacts, infection vectors (malvertising, phishing, bundled software, vulnerabilities), nine classification types (e.g., adware, keyloggers, stalkerware, mobile spyware), detection and removal methods, prevention best practices—including vendor risk management—and notable examples; it is a general threat awareness piece rather than a report of a specific incident.