Information Security Tips (Mar 2025) – Importance of Using Passwords with Reasonable Length and Complexity
資訊安全貼士 (2025年3月號) - 使用合理長度及複雜性密碼的重要性

To: All Users
In today’s digital world, our online accounts hold a vast amount of personal and professional information. Protecting this information is crucial, and one of the most effective methods is to use passwords with reasonable length and complexity. This approach can increase the difficulty for hackers to crack your passwords. In general standard, passwords are recommended to have at least 8 characters long, preferably 15 characters, and consider including uppercase and lowercase letters, numbers, and special characters.
Tips for Setting Passwords:
- Set Strong Passwords:
- Passwords should have a specific length and complexity, or use long, easy-to-remember passphrases that are difficult for others to guess.
- Avoid Using Personal Information:
- Do not use information that is easy for others to guess, such as your name, birthdate, pet’s name, or common words.
- Avoid Reusing Passwords:
- Do not reuse the same password across multiple accounts. If one account is compromised, all other accounts using the same username and password are at risk.
- Enable Two-Factor Authentication (2FA):
- Whenever possible, enable 2FA service to add an extra layer of security.
- Regularly Check Account and Password Safety:
- It is recommended to regularly check the safety of your accounts and passwords, and change them promptly if you suspect they have been compromised.
By following these tips and developing the habit of using passwords with reasonable length and complexity, you can protect the security of your accounts and information.
Should you have any enquiries, please feel free to contact ICTO Help Desk.
Reference:
- Two-Factor Authentication (2FA)
- How to choose a strong password?
- More information security laws, regulations, policies and guidelines
- How to download and install software in a secure manner
ICTO Help Desk
Location : Room 2085, 2/F, Central Teaching Building (E5), eMap
Telephone : 8822 8600
email : icto.helpdesk@um.edu.mo
Information and Communication Technology Office
各位用戶:
在現今的數位世界中,我們的網上帳戶存有大量的個人和專業資訊。保護這些資訊至關重要,最有效的方法之一就是使用合理長度及複雜性的密碼,這樣可以增加駭客破解密碼的難度。一般標準建議密碼至少包含8個字符,最好為15個字符,可考慮包括大小寫字母、數字和特殊字符。
設定密碼的提示:
-
設定強度足夠的密碼:
- 密碼應具有特定的長度和複雜性,或使用長且易記但難以被他人猜測的密碼短語。
- 避免使用個人資訊:
- 不要使用容易被他人猜到的資訊,如您的姓名、出生日期、寵物的名字或常見詞彙。
- 避免使用相同的密碼:
- 不要在多個帳戶中重複使用相同的密碼。如果其中一個帳戶被洩露,您的其他使用相同用戶名及密碼的帳戶都處於風險中。
- 雙重身份驗證 (2FA):
- 盡可能啟用雙重身份驗證 (2FA)服務,這樣可以增加一重額外的保障。
- 定期更新密碼:
- 建議定期檢查帳戶及密碼的安全性,並在懷疑密碼洩露時及時更改。
按照上述提示並養成使用合理長度及複雜性密碼的習慣,您可以保護您的帳戶安全及資訊。
如有任何疑問,請聯絡資訊及通訊科技部服務中心。
參考資料:
服 務 中 心
位置 : 中央教學樓東5座(E5)二樓2085室 (電子地圖)
電話 : 8822 8600
電郵 : icto.helpdesk@um.edu.mo
資訊及通訊科技部