Translations:Help:Login notifications/23/en

"As a rule of thumb, a password that is reasonably long, with a mixture of upper and lowercase letters and numbers, and not mostly made up of dictionary words or names or personal information (date of birth, cat's name, etc.) is likely to be reasonably strong for everyday use. Passwords that consist of just lowercase letters can also be reasonably strong, but they must be significantly longer" (source, English only)