Translation guide
A white hat hacker is an ethical security professional who uses hacking skills to find and fix vulnerabilities, as opposed to malicious hackers. In Japanese, the term is often borrowed directly from English, but there are also native expressions to describe this role.
Referring to a person who hacks for defensive or ethical purposes, often employed to test security.
Direct loanword from English, widely understood in tech contexts. This is the most common and natural way to say 'white hat hacker' in Japanese.
彼は有名なホワイトハッカーです。
He is a famous white hat hacker.
Literally 'good-guy hacker', using the term 善玉 (good character) from traditional stories. It's a more colorful, somewhat colloquial way to describe an ethical hacker.
善玉ハッカーが企業のセキュリティを守っている。
White hat hackers protect corporate security.
A more formal, literal translation meaning 'ethical hacker'. Used in academic or policy discussions, but less common in everyday speech.
倫理的ハッカーとしての訓練を受ける。
Receive training as an ethical hacker.
Describing the professional role of someone who tests systems for vulnerabilities, often in a corporate or consulting context.
Common job title for security professionals, including those who do penetration testing. It's a broader term but often implies ethical hacking skills.
セキュリティエンジニアとしてシステムの脆弱性を診断する。
As a security engineer, I diagnose system vulnerabilities.
Literally 'vulnerability diagnostician', a specific term for professionals who assess and report security weaknesses. It's a recognized qualification in Japan.
脆弱性診断士の資格を取得した。
I obtained the vulnerability diagnostician certification.
Direct loanword for 'penetration tester'. Used among IT professionals but may not be widely understood outside the field.
ペネトレーションテスターとして企業のネットワークを検査する。
As a penetration tester, I examine corporate networks.
In Japanese, the distinction is often made with ホワイトハッカー (white hat) and ブラックハッカー (black hat). 善玉 (good) and 悪玉 (evil) can also be used, as in 善玉ハッカー vs. 悪玉ハッカー, but these are less common and more colloquial.
ホワイトハッカーとブラックハッカーの違いは倫理にある。
The difference between white hat and black hat hackers is ethics.
When speaking casually, ホワイトハッカー is perfectly fine. In a job interview or formal setting, you might want to use セキュリティエンジニア or describe your role more specifically, as ホワイトハッカー can sound a bit sensational.