Avoid 123456 or qwerty-based passwords.
The latest update, compiled in Q4 2024 and early 2025, adds over from breaches affecting Niconico, LINE (third-party integrators), and several undisclosed Japanese SMEs.
5963 : Read as Go-Ku-Ro-Sa-Ma ("Thank you for your hard work"). 39 : Read as San-Kyuu ("Thank you").
Just like "qwerty" in English, Japanese users often use sequential keys. asdfghjkl 12345678 password (written as pasuwado or simply pw ) 📈 Why Japanese Passwords Are Targeted japanese password list updated
Common phrases like ohayou or itadakimasu are in most standard Japanese wordlists. 📍 Use a mix of Romaji, numbers, and special characters. Example: Instead of Sushi123 , use S-u-sh1_20!26 . 📍 Lengthen the String
Users frequently reuse the same password across distinct Japanese platforms. The list shows identical credentials used for LINE, Yahoo! Japan, and local banking portals. How Attackers Exploit This Data
Many people use "123456" or "000000" because they are easy to type. Avoid 123456 or qwerty-based passwords
Confirm and provide:
これからの時代に求められる強固なパスワードの条件は、**「複雑さ」よりも「長さ（文字数）」**です。 ■ パスフレーズ（Passphrase）のすすめ
5. IT管理者・ユーザーが今すぐ導入すべき2つの必須対策 39 : Read as San-Kyuu ("Thank you")
These common passwords can be cracked in less than a second by automated brute-force attacks, as shown in studies by Nord Security and Huntress . Using names or popular terms makes a user vulnerable to and dictionary attacks . The Reality of Cybersecurity in Japan (2026)
While Japan-specific lists highlight local vulnerabilities, the cybersecurity landscape was fundamentally altered in 2024 by the emergence of RockYou2024, a compilation of nearly from thousands of past data breaches.