(especially in Japan):
The updated Japanese password list for 2025 is a warning. The prominence of admin and personal names demonstrates a critical need for better security practices. By understanding the risks and adopting the outlined defenses, you can take immediate and effective action to protect your digital life.
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. japanese password list updated
セキュリティ機関や数百万件の漏洩データの解析から判明した、日本国内で特に使われがちな危ないパスワードのパターンは以下の通りです。
: Using numbers that sound like words (e.g., 4649 for yoroshiku , 39 for sankyuu/thank you ). (especially in Japan): The updated Japanese password list
Use a random string of mixed-case letters, numbers and symbols. CISA (.gov) Strong Passwords
April 12, 2026 Subject: Analysis of the latest update to a password dictionary targeting Japanese users Type of Review: Security research / Threat intelligence Use a random string of mixed-case letters, numbers
Combinations of ubiquitous surnames like Sato , Suzuki , or Takahashi paired with birth years. 2. Goroawase (Numeric Wordplay)