Backup and recovery, hardware firewalls, intrusion detection systems and biometrics; passwords and authentication, encryption, firewalls and antivirus; and the personal habits that keep an individual safe online.
4 narrated scenes. Press play, listen and read along — the points appear as they are explained. Use ‹ Prev / Next › or the scene bar to jump to any scene.
Most successful attacks need a mistake from a person: a weak password or a clicked link. Good countermeasures combine technology, locks and sensible habits.
Narration uses your device’s built-in voice. No sound? Switch to “Captions only” — the captions advance on their own.
Encrypt a message and see what happens when the receiver uses the wrong key.
Copy these into your notebook in your own words — that is how they stick.
Copies stored safely + a plan to restore.
Filters traffic between network and Internet.
Monitors and alerts to intrusions.
Fingerprint, face, iris: something you are.
Long, mixed, unique, not guessable.
Two different proofs of identity.
Scrambles data; needs a key to read.
Remove malware; patch vulnerabilities.
3 quick games on this lesson. Earn XP and badges as you play — your best score for each game is saved. Games are for practice and do not change your exam readiness. More games in the Information Technology Arcade.
8 items modelled on real CSEC Paper 1 questions. Choose one answer for each, then check. Aim for 80% or better. Work each item on paper first.
Write full answers, then reveal the mark scheme and tick the points you earned (15 marks in total). Show all your working — method marks count. Your answers are saved on this device.
Question 1 [15 marks]
A small clinic stores patient records on a computer connected to the Internet. It has been warned about malware and data theft.
(a) (a) State two physical countermeasures the clinic could use and say what each protects against. [4]
(b) (b) Describe two software countermeasures. [4]
(c) (c) Describe the features of an effective password. [3]
(d) (d) Explain what two-factor authentication is. [2]
(e) (e) Suggest two personal practices a receptionist should follow when using email. [2]
Find these in your own past-paper booklets for extra timed practice. Items above are written in the style of these papers; any adapted from a specific question say so.