← Years 5–6 Digital Systems

Strong passwords

A password that is long and hard for others to guess. It avoids names, birthdays and common words like password123, and it mixes letters, numbers and symbols.

Part of: 5-6 Digital Technologies Vic Curric - Digital Systems & Security — Module 41, 7-8 Digital Technologies Vic Curric - Digital Systems and Security — Module 51, IGCSE Computer Science 0478 — 5.3 Cyber Security — Module 26, ACARA Digital Technologies Years 5–6 — Staying Safe Online — Module 6, ACARA Digital Technologies Years 7–8 — Networks and Cyber Threats — Module 25, ACARA Digital Technologies Years 9–10 — Networked Systems and Access Control — Module 100

Understanding Strong passwords in Years 5–6 Digital Systems

What it does: This password has 26 characters. Longer passwords have many more possible combinations, which makes them much harder to guess. password123 is a very common password that people guess first. A strong password avoids common words and patterns. Several random words joined with symbols and numbers are long and hard to guess but still easy to remember. A pet's name is easy to guess.

Common mistakes: Length matters most for a strong password, so the check should pass when the password is long. It should be length >= 12, not <= 12, which would approve short passwords. 'password123' is a very common password that is easy to guess. The line should set a long, mixed password such as "Hd7#kQ!2vLp9".

Class: _____________________ · Name: _____________________ · Date: _________

Free printable worksheet with full answer key — or add this module to a class and your students practise it interactively.

🖨 Print worksheet + answer key Add Strong passwords to a class →

This module's key terms are also in a printable crossword (Modules 41–52) and word search (Modules 21–52).

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Each concept is reinforced from every angle — learned, then applied, then tested.

Learning

Duo

Which password is stronger?

blue-Tiger-jumps-42!abc123

Matches

Mia2014

↓

It uses a name and a birth year, which others can easily guess, and it is too short

Applying

Meanings

Term

strong password

Meaning

A password that is long and hard for others to guess. It avoids names, birthdays and common words like password123, and it mixes letters, numbers and symbols.

Practice

Weak: password123

Testing

Gaps

print((password))

Check Answer

Spots

2length = len(pw)

3if length <= 12:

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Quick Questions

1. Which password is stronger?

A. abc123

B. blue-Tiger-jumps-42! ✓

Longer passwords are harder to guess. A short password like abc123 can be cracked very quickly.

2. What matters most for making a password strong?

A. Making it long ✓

B. Making it short so it is easy to type

Length matters most. Every extra character makes a password much harder for others to guess.

3. Which password should you avoid?

A. R7!fox-plum-Cloud9

B. password123 ✓

password123 is a very common password that people guess first. A strong password avoids common words and patterns.

4. True or false: A strong password can include your birthday.

A. False - birthdays are easy for others to guess ✓

B. True - a birthday is hard to guess

Names, birthdays and other personal details are easy for others to find out or guess, so a strong password avoids them.

5. Which mix makes a password harder to guess?

A. Letters, numbers and symbols ✓

B. Only lowercase letters

Mixing uppercase and lowercase letters, numbers and symbols gives more possible combinations, so the password is harder to guess.

Match the Pairs

BlueTiger!Eats7Pizza → A strong password: long, mixes letters, numbers and symbols, and is hard to guess

password123 → A weak password: it is a common word with an easy number that others can guess quickly

Length matters most: a longer password is harder for others to guess → Sunny!Frog7Jumps#Over9Logs

A strong password avoids names and birthdays that others might know → Hq7!Lemon$Rocket42

Mia2014 → It uses a name and a birth year, which others can easily guess, and it is too short

abc123 → It is very short and uses a simple pattern, so it is easy to guess and not strong

Key Term

strong password

A password that is long and hard for others to guess. It avoids names, birthdays and common words like password123, and it mixes letters, numbers and symbols.

Fill in the Blanks

1. password = "BlueTiger!7Sky" print(len(password))

Hint: Type the built-in function that counts how many characters are in the password, since a longer password is stronger

2. password = "BlueTiger!7Sky" longer = len(password) > 11

Hint: Type the comparison operator that checks the password has more characters than the number shown

3. weak = ["password123", "qwerty"] if password in weak: print("Too easy to guess")

Hint: Type the keyword that tests whether a value is found inside a list of common weak passwords

4. long = len(password) >= 12 symbol = "!" in password strong = long and symbol

Hint: Type the logical operator that needs both conditions to be True for the password to count as strong

5. words = ["blue", "tiger", "jump", "cloud"] passphrase = "-".join(words) print(len(passphrase))

Hint: Type the string method that glues the list of words together into one long, easy-to-remember passphrase

Spot the Error

Question 1

A pw = "Tr33!House#Blue9"

B length = len(pw)

C if length <= 12:

D print("Long enough")

Line C — Length matters most for a strong password, so the check should pass when the password is long. It should be length >= 12, not <= 12, which would approve short passwords.

Question 2

A bad = ["password123", "Mia"]

B pw = "password123"

C if pw not in bad:

D print("Good choice")

Line B — 'password123' is a very common password that is easy to guess. The line should set a long, mixed password such as "Hd7#kQ!2vLp9".

Question 3

A min_length = 3

B pw = "Blue!Tiger_84_Cloud"

C if len(pw) >= min_length:

D print("Long enough")

Line A — A minimum length of 3 is far too short, so almost any password would pass. Strong passwords are long, so the minimum should be about 12.

Question 4

A pw = "Tr33!House#Blue9"

B has_symbol = pw.isalpha()

C has_number = "3" in pw

D print(has_symbol and has_number)

Line B — isalpha() only checks whether every character is a letter, so it does not detect symbols. A symbol check should be not pw.isalnum().

Question 5

A pw = "Tr33!House#Blue9"

B name = "Mia"

C if name not in pw:

D print("Weak password")

Line C — A password that contains a name is weak and easy to guess. The check should be if name in pw, so the warning shows when the name is found.

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