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Grade 8 Cybersecurity & Passwords Worksheet with Answers
Grade 8 (US) · Year 9 (UK) · Class 8 (India) · Computer Science
Unit 5: Networks & SecurityProtecting DataCSTA 2-NI-06
Password strength by counting combinations, spotting threats, and simple encryption. This free middle school worksheet has 12 questions and a full answer key. Print it or save it as a PDF — every answer is checked by code, not guessed.
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Practice Sheetaethelsystems.comCybersecurity & Passwords
Grade 8 · Computer Science
Name
Class
Date
Learning goal: Protecting Data · CSTA 2-NI-06
Directions: Read each question carefully and write your answer on the line. Use the diagram to help you.
Which is the strongest password: password123, 12345678 or T!ger7Moon#?
Answer: T!ger7Moon#
RememberStaying secure
- 1
A PIN has 5 digits (0–9). How many different PINs are possible?
- 2
A password is 2 lowercase letters (a–z). How many passwords are possible?
- 3
A password is 4 lowercase letters (a–z). How many passwords are possible?
- 4
A PIN has 4 digits (0–9). How many different PINs are possible?
- 5
A Caesar cipher moved every letter 3 forward. Decrypt: VDIH
- 6
A Caesar cipher moved every letter 3 forward. Decrypt: GDWD
- 7
A password is 3 lowercase letters (a–z). How many passwords are possible?
- 8
A Caesar cipher moved every letter 3 forward. Decrypt: FRGH
- 9
A Caesar cipher moved every letter 2 forward. Decrypt: EQFG
- 10
A PIN has 3 digits (0–9). How many different PINs are possible?
- 11
A Caesar cipher moved every letter 1 forward. Decrypt: DMPVE
- 12
A Caesar cipher moved every letter 2 forward. Decrypt: ENQWF
★ Challenge corner for fast finishers
A robot on a grid can only move forward 1 square, or turn. What is the fewest forward moves to go 2 squares east and 1 squares north?
How did I do?
Teacher's comments
Free printable worksheets with answer keys · aethelsystems.com/worksheets/computer/8/cybersecurity
Answer key — Cybersecurity & Passwords (Grade 8)
- 1.100,000
- 2.676
- 3.456,976
- 4.10,000
- 5.safe
- 6.data
- 7.17,576
- 8.code
- 9.code
- 10.1,000
- 11.cloud
- 12.cloud
- ★3
Answer key (click to show)
- 1.100,000
- 2.676
- 3.456,976
- 4.10,000
- 5.safe
- 6.data
- 7.17,576
- 8.code
- 9.code
- 10.1,000
- 11.cloud
- 12.cloud
- ★3 (challenge corner)
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