Strong passwords

Strong passwords are long.

Switching case is helpful.

That’s it – more characters means more possibilities for bad actors to deal with. Think of our discussion from class about the mathematics involved.

You will see contradictory advice on passwords. It’s a constant source of frustration in the computing industry…

How are passwords found by bad actors?

  • Educated guesses
  • Brute force (trying all possible combinations)
  • Stuffing (get credentials for one site, use on another)
  • Phishing

Password manager

How to avoid problems with your passwords?

Use a password manager!

No, really.

Use a password manager.

Multi-factor authentication

More than one type of evidence needed to authenticate.

  • Knowledge
    • Something you know, like a password.
  • Possession
    • Something you have, like a USB token.
  • Inherence
    • Something that you are, like biometric data – a fingerprint, the iris of your eye (the coloured part).

You can read more about these three factors here.

Exercises

From Khan Academy, finish these modules and related quizzes: