Japanese Password List Updated [cracked] May 2026

In 2026, cybersecurity experts and recent data breaches have highlighted that while global favorites like "123456" still lead in Japan, unique local trends such as the use of flower names and keyboard patterns continue to expose users to risk.  Japan's Most Common Passwords (2025–2026) 

Analysis of leaked credentials shows a mix of generic global sequences and culturally specific terms: 

Top Numeric Sequences: 123456, 123456789, 1234, and 12345678.

Keyboard Patterns: "1qaz2wsx" and "159753qq" are particularly prevalent among Japanese users.

Cultural & Nature Terms: "Sakura" (cherry blossom), "Himawari" (sunflower), and "Doraemon" (manga character) frequently appear in the top 50. japanese password list updated

Personal Names: Common names like "Hiromi" and "Miyuki" remain high-risk choices.  Unique Japanese Password Characteristics 

Recent research indicates that Japanese user-created passwords exhibit greater dispersion than English or Chinese counterparts. However, specific vulnerabilities persist: 

Romanized Japanese (Romaji): Users often use Japanese words written in the Latin alphabet, which are easily targeted by specialized Japanese wordlists used in dictionary attacks.

Date-Based Patterns: Combinations like "Fuyu2017" (Winter 2017) or month-based strings like "1Tsuki2016" (January 2016) are common variations. In 2026, cybersecurity experts and recent data breaches

Keyboard Walks: Pattern-based passwords that follow the physical layout of a QWERTY keyboard are a primary characteristic of Japanese leaks.  Evolving Security Measures in Japan 

To combat the reliance on weak passwords, major Japanese platforms are shifting toward modern authentication: 

1. Common Password Patterns in Japan

Security researchers have identified specific patterns unique to Japanese culture that appear frequently in updated password lists. These lists are often used in "dictionary attacks" against Japanese servers.

Key Characteristics:

• Keyboard Layout (QWERTY to Kana): Many Japanese users create passwords based on the standard romaji input.
  • Example: The sequence "qwerty" corresponds to specific hiragana characters on a Japanese keyboard (たていすかん - ta te i su ka n). Consequently, "tateisukan" or similar nonsense words appear frequently in Japanese password lists.
• Cultural Phrases:
  • Doraemon: The name of the famous anime cat is historically one of the most common passwords in Japan.
  • Pokemon: Names of popular characters (Pikachu, Mewtwo) are widely used.
  • Common Surnames: Sato, Suzuki, Takahashi.
• Numeric Patterns:
  • Passwords like 123456, 111111, and 000000 remain dominant globally but are extremely prevalent in Japan, particularly for older systems or IoT devices.
  • Japanese specific dates (e.g., Emperor's birthdays, holiday dates like 0101 for New Year's) often appear.

2. Use Cases (Legitimate & Malicious)

Legitimate:

• Penetration testers auditing Japanese organizations (adds localization to dictionary attacks).
• Security researchers checking password hygiene trends in Japan.
• System administrators enforcing blacklists.

Malicious:

• Brute-force attacks against Japanese user accounts (webmail, forums, FTP, SSH).
• Credential stuffing using leaked Japanese databases.

5. Avoid Common Japanese Password Mistakes

• ❌ Using birthdays (誕生日) – too easy if your 年賀状 or social media leaks.
• ❌ password123 or toukyo2024 – dictionary attacks break these.
• ❌ Same password for Ameba, NicoNico, and Pixiv – one breach compromises all.
• ❌ Writing passwords on 付箋 (sticky notes) on your monitor – very common in Japanese offices, very unsafe.

3. Why These Lists are Dangerous (The "Default" Issue)

A significant portion of "Japanese password list" content is related to default credentials for electronics manufactured in Japan.

• Historically, Japanese IoT devices (routers, webcams) were shipped with default usernames and passwords (e.g., admin:admin, root:root, or user:user).
• The Mirai Botnet utilized a specific list of default credentials, many of which targeted Japanese-manufactured devices. Updated lists continue to exploit devices where users have not changed the factory settings.