Counter spies or counterintelligence agents are individuals who work in intelligence agencies to prevent hostile nations or organizations from infiltrating and collecting sensitive information. They use various techniques and tools to detect and disrupt the enemy's espionage activities. There are several synonyms for counter spies that are used interchangeably in the intelligence community. Some of these synonyms include counterintelligence officers, spies hunters, covert operations specialists, intelligence analysts, and espionage experts. Regardless of their title or position, these professionals play a vital role in protecting national security and ensuring the safety of citizens.