Lesson · Grade 6 · Applied Design, Skills and Technologies

Strong Passwords and Passphrases

  • Grade 6
  • Applied Design, Skills and Technologies
  • 1 min 14 s
  • British Columbia
  • BC6-AD-11

A password box and a guessing program show why common passwords, pet names with birth years, and swaps like @ for a are guessed quickly, and a table shows that each extra lowercase letter means 26 times as many passwords to try. Four random words then join into a 21-character passphrase that is strong and easy to remember, and three accounts with their own keys show why each password should be used only once.

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In one sentence

The question this lesson answers

What makes a password strong enough to keep your account safe?

Attackers use programs that can try a huge number of guesses very fast.

Transcript

What the lesson says

What makes a password strong enough to keep your account safe?

Attackers use programs that can try a huge number of guesses very fast.

They try the most common passwords first, like password one two three.

Pet names and birth years are easy for other people to find out.

Guessing programs also know swaps, like an at sign for a and a zero for o.

Length helps a lot: each extra lowercase letter means 26 times as many passwords to try.

A passphrase joins a few random words into one long password.

This one has 21 characters, yet it is easy to remember.

Pick the words at random, not a well-known phrase.

Use a different password for each account.

Then one leaked password cannot open your other accounts.

A strong password is long, random and used only once, so try a passphrase.

Curriculum

Where this fits

This lesson is also listed in Grade 7.

The outcomes and strands follow the British Columbia curriculum.