infiltrator
An infiltrator is a person who enters an organization, group, or facility covertly to observe, influence, or obtain information. In intelligence and security contexts, infiltrators are sent to blend in, build sources, or disrupt operations. They may assume false identities or social roles to gain access to restricted areas or sensitive information.
In military, political, and corporate settings, infiltrators can act as spies, informants, or inside agents. The
Lawful use exists in undercover operations conducted by law enforcement and intelligence agencies under legal oversight.
Detection and prevention rely on counterintelligence and security practices such as background checks, anomaly detection, segregation
In fiction and popular culture, infiltrators are common archetypes, often portrayed as masters of disguise or