乗っ取り

Japanese Slang Japanese ★★★★ 4/5 casual to neutral のっとりnottori

読み のっとり

ローマ字 nottori

漢字の分解 乗 (ride/board) + 取 (take) — 乗っ取り means to seize control of something by boarding or taking it over

発音 /no.t.to.ri/

意味

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).

例文

Xのアカウントが乗っ取られて変なDMが送られてた。
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。
知り合いのInstagramが乗っ取られたみたいで変な投稿してた。

使い方ガイド

場面: social media, security, news, everyday conversation

トーン: alarmed, cautionary

正しい言い方

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?)

避ける言い方

「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)

よくある間違い

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

起源と歴史

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.

文化的背景

時代: 2010s digital crime awareness

世代: All ages

社会的背景: Universal

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