OpenCyber Academy
Technologist · Chapter 1 · English
Course code: OCA-075Chapter 01: OCA-075-C001

Chapter 1 — Computing systems

Open, free learning for anyone who wants to protect people and technology. No account is required to read this text or its worked answers.

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Public activity · 30d

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Learning outcomes

You will (1) describe the computing systems used in a small healthcare business; (2) identify where staff interact with security; (3) note how workload shapes behaviour.

1.1 Clinic systems

Lucas Ferreira, a technologist student at the fictional Northgate Institute of Technology, starts a placement at the fictional Brightwell Dental Group, with fourteen clinics and 210 staff. Each clinic has reception computers, a practice management system holding patient records, imaging computers and a shared printer. His instructor, Marta Kowalczyk, asks him to list every system and who uses it. Lucas finds that reception staff use four systems during a single appointment booking, switching quickly between screens while talking to patients on the phone or at the desk.

1.2 Security touchpoints

Lucas marks each point where staff meet security: logging in at shift start, locking screens, entering passwords for the imaging system, opening emails from suppliers and patients and handling payment details. Receptionists log in and out many times a day. Adams and Sasse (1999) showed that when security mechanisms conflict with work, users find workarounds. Lucas sees sticky notes with passwords at two clinics and understands them not as carelessness but as a response to too many passwords and too little time between patients.

1.3 Workload and behaviour

During a busy morning, a receptionist handles calls, check-ins and payments with a queue of patients waiting. Lucas notes that security tasks compete with patient care for attention. A screen lock that requires a long password every two minutes is unworkable here. He records his observations as a short report: the number of systems, logins per shift and the main pressure points. This baseline will guide later design choices, because any control must fit the reality of a clinic front desk to be used consistently.

Worked example

Lucas lists clinic systems, maps security touchpoints, explains sticky-note passwords as a workaround and records workload pressure points.

Synthetic case. Brightwell Dental Group is synthetic; Adams and Sasse (1999) is real.

Errors and limits

One morning may not be typical. Observations must respect patient privacy.

Exercises

  • EX001 — Systems per booking. How many systems do receptionists use for one booking?
    Show marking criteria
    Rubric: 3 = four;; 2 = 4;; 1 = one;; 0 = none.
  • EX002 — Sticky notes. How does Lucas interpret sticky-note passwords?
    Show marking criteria
    Rubric: 3 = a workaround for too many passwords and little time;; 2 = workaround;; 1 = carelessness;; 0 = none.
  • EX003 — Competing demand. What do security tasks compete with at reception?
    Show marking criteria
    Rubric: 3 = patient care;; 2 = patients;; 1 = vague;; 0 = none.

Synthesis

Understanding systems and workload comes before designing any security control.

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Practice the exercises

Open a prompt, write your response, then compare it with the worked answer. Five-choice practice appears where a reviewed question is available.

EX001

Opens in 30 days: — · browsers: —

Checking for a reviewed five-choice question…

EX002

Opens in 30 days: — · browsers: —

Checking for a reviewed five-choice question…

EX003

Opens in 30 days: — · browsers: —

Checking for a reviewed five-choice question…

Worked answers

EX001. Four systems.

EX002. As a workaround caused by too many passwords and too little time.

EX003. Attention to patient care.