Translation guide
A person who uses hacking skills for defensive or authorized purposes, such as testing security systems. In Japanese, this concept is often expressed with loanwords or descriptive phrases.
Referring to a professional who hacks with permission to improve security.
The most common and direct loanword for 'white hat hacker', widely understood in tech contexts.
彼は有名なホワイトハッカーです。
He is a famous ethical hacker.
A more literal translation using 'ethical' (倫理的). Less common but clear in meaning.
倫理的ハッカーとして企業のセキュリティをテストする。
Test corporate security as an ethical hacker.
Literally 'good-guy hacker', a colloquial term sometimes used in media. Not standard in professional settings.
映画では善玉ハッカーが悪者と戦う。
In the movie, the ethical hacker fights the villains.
Explaining what an ethical hacker does, often in a sentence.
A natural way to describe the activity: 'conduct hacking as a security expert'. Avoids direct translation of 'ethical'.
彼はセキュリティの専門家としてハッキングを行っている。
He conducts hacking as a security expert.
Emphasizes authorized access: 'hack with permission'. Useful for clarifying legality.
許可を得てハッキングするのが彼の仕事だ。
His job is to hack with permission.
Directly translating 'ethical hacker' as 倫理的ハッカー is understandable but sounds stiff. ホワイトハッカー is the standard term.