乗っ取り

• Reading: のっとり
• Romaji: nottori
• Kanji breakdown: 乗 (ride/board) + 取 (take) — 乗っ取り means to seize control of something by boarding or taking it over
• Pronunciation: /no.t.to.ri/

Meaning

Account hijacking — having your social media or online account taken over by someone else.

乗っ取り (のっとり) literally means 'takeover' and in the digital context specifically refers to an account being accessed and controlled by an unauthorised person. It is used both for targeted hacking and for phishing-based account theft. Phrases like 「アカウントが乗っ取られた」 (my account got taken over) are widely used on social media when someone reports suspicious activity. The word is also used in its literal sense for corporate takeovers (会社の乗っ取り).

Examples

1. Xのアカウントが乗っ取られて変なDMが送られてた。 My X account got hijacked and weird DMs were being sent from it.
2. 乗っ取り対策にパスワードは使い回さないようにしよう。 To protect against hijacking, don't reuse the same password.
3. 知り合いのInstagramが乗っ取られたみたいで変な投稿してた。 My friend's Instagram seems to have been hijacked — it was posting weird stuff.

Usage Guide

Context: social media, security, news, everyday conversation

Tone: alarmed, cautionary

Do Say

• アカウント乗っ取られたかも、すぐパスワード変えて。 (My account might have been hijacked — change your password immediately.)
• 乗っ取り対策でちゃんと二段階認証設定した？ (Have you properly set up 2FA against account hijacking?)

Don't Say

• 「ハック」と「乗っ取り」は重なる部分があるが、乗っ取りはアカウント支配に特化 (「ハック」 and 「乗っ取り」 overlap but 乗っ取り specifically focuses on taking control of an account)

Common Mistakes

• Using 乗っ取り only for serious hacking — it also applies to simpler phishing-based account takeovers
• Forgetting that 乗っ取り has non-digital meanings (business takeover, hijacking) which can cause ambiguity without context

Origin & History

The word 乗っ取り (from 乗っ取る, to take over/seize) has existed in Japanese for centuries, originally referring to capturing a vessel or overthrowing a government. Its use for digital account hijacking emerged naturally in the 2010s as social media account theft became a common online crime.

Cultural Context

Era: 2010s digital crime awareness

Generation: All ages

Social background: Universal

Regional notes: Used across all of Japan. Account hijacking incidents reported in news and on social media have made this term widely familiar.