Cyber Threats and How Systems Defend · seed 1 · A4, ink-friendly. The answer key prints on its own page for grown-ups.

Match each attack to its defence

Computing · Computer Systems · ages 15-16
Name ______________________   Date ____________

  1. What is social engineering?

    • Guessing passwords with special software
    • Locking a stolen phone from far away
    • Pretending to be someone trusted so a person hands over access

  2. You get a message: your account is locked, so send your password to fix it. What should you do?

    • Send the password so the account gets fixed
    • Refuse and use the official recovery page if you need help
    • Forward your next reset code to the sender

  3. Antivirus software will remove a stranger from your Wi-Fi network.

    Circle one:   True   False

  4. Your phone is stolen with accounts still logged in. What is your best move?

    • From another device, lock or erase it through your signed-in account
    • Waiting quietly and hoping nobody opens anything
    • Sending the thief your new password by text

  5. Someone outside your house is using your Wi-Fi without asking. What fixes it?

    • Scanning your laptop for viruses
    • Changing the Wi-Fi password to a long random one and joining only your devices
    • Unplugging the router for one minute

  6. Which password is hardest to guess?

    • Your birthday joined to your name
    • A plain word with one letter changed
    • A long random string stored in a password manager

  7. Tom gave his Wi-Fi a new password, but reused his email password for it. What is still wrong?

    • One leak of either account now opens the other, so the password must be unique
    • Nothing is wrong once a password has been changed
    • He should now switch off two-factor checks

  8. Mia set up remote lock, but her account password is sunny123, reused on three sites. What is wrong?

    • Remote lock never works in any situation
    • A thief can guess the weak password or find it leaked and switch protection off
    • She should have shared the password with her friends
LightMySky · lightmysky.comW1-mt_zMJzhIdEWd-s1

Answer key

For grown-ups. Fold this page away before handing over the rest.

Match each attack to its defence W1-mt_zMJzhIdEWd-s1

  1. Pretending to be someone trusted so a person hands over access · It targets the person rather than the code, borrowing a trusted identity to win access.
  2. Refuse and use the official recovery page if you need help · No genuine helper needs your password. The official process exists for exactly this moment.
  3. False · The weak spot is the password, so only a new password closes that door.
  4. From another device, lock or erase it through your signed-in account · Remote lock and erase were built for exactly this threat, and they act in seconds.
  5. Changing the Wi-Fi password to a long random one and joining only your devices · The stranger entered with the password, so a fresh unique password locks them out.
  6. A long random string stored in a password manager · Length plus surprise defeats guessing, and the manager keeps it unique.
  7. One leak of either account now opens the other, so the password must be unique · Reuse links the two accounts, so a single leak still unlocks both.
  8. A thief can guess the weak password or find it leaked and switch protection off · The defence holds only while the account password behind it stays strong and unique.
Worksheet · LightMySky