Translation guide
Counterintelligence refers to activities designed to prevent or thwart enemy intelligence operations. In Japanese, this concept is expressed through specific terms used in military, security, and law enforcement contexts.
The overall practice of protecting against enemy espionage and intelligence activities.
The most direct and common term for counterintelligence, used in military and security contexts.
防諜活動は国家の安全にとって不可欠です。
Counterintelligence activities are essential for national security.
A broader term that encompasses counterintelligence as part of information warfare.
軍は対情報活動を強化している。
The military is strengthening its counterintelligence operations.
A less common term that specifically implies counter-espionage, often used in historical or literary contexts.
彼は逆諜報の専門家として知られていた。
He was known as an expert in counterintelligence.
Specific actions or missions to thwart enemy intelligence.
Refers to a counterintelligence operation or mission.
防諜作戦が成功し、スパイを逮捕した。
The counterintelligence operation was successful, and they arrested the spy.
Literally 'anti-spy activities', a more colloquial way to refer to counterintelligence efforts.
対スパイ活動は諜報機関の重要な任務だ。
Counterintelligence is an important mission of intelligence agencies.
The discipline or profession of counterintelligence.
The field or domain of counterintelligence.
彼は防諜分野で長年の経験がある。
He has many years of experience in the field of counterintelligence.
In Japanese, counterintelligence is almost always discussed in military, police, or security contexts. The term 防諜 (bōchō) is the standard, but in news or formal reports, you may see 対情報活動 (tai jōhō katsudō) used to emphasize the information aspect.