Prerequisites for a strong password

The password must be difficult to guess. A good password contains both upper and lower case letters, numbers, and certain allowed special characters. A good password is as long as possible, yet one that you can remember and no one else can guess. It may be difficult to remember a long and seemingly random password, but there are some memory-assisting techniques you can use.

    Examples of appropriate passwords

    For example, form the password from a sentence that makes sense to you:


    • only IPersonally know what Idid last summer,13,no one else!
    • This character string seems completely random but it is actually based on an expression you have thought of.


    • The opening words from 'A Tale of Two Cities' by Charles Dickens: "[It was the] best of times, it was the worst of times, it was the age of wisdom, it was the age of foolishness."
    • A rhyme, poem or famous phrase may be easier to remember than a random sentence.


    • The displeasing outcome of a trigonometry exam on 27 August at least makes for a good password.
    • Even though the idea is quite understandable when written out like this, the phrase doesn't contain any actual words.


    • A maximum-length password is usually very strong. You just have to remember it yourself.

    The password can even be in plain language and describe, for example, a childhood memory, as long as it is one that no one else can guess and it meets the general criteria.

    Give feedback

    The instructions site of the University of Helsinki's IT Helpdesk helps you with IT-related issues related to your work. Let us know how we can improve our instructions. We greatly appreciate your feedback!

    How would you improve these instructions?
    Back to top