A State Trojan is a type of malware developed and deployed by government agencies to covertly monitor, intercept, or collect data from target devices. Unlike typical cybercriminal malware, State Trojans are used legally by authorities, often during criminal investigations or intelligence operations. They can record keystrokes, capture screenshots, intercept communications, and access files without the user's knowledge. The use of State Trojans is controversial due to privacy concerns, potential misuse, and the risk of such tools falling into unauthorized hands. Their deployment is usually regulated by strict legal frameworks in democratic countries.