3.5 Privacy Internal Controls: Design, Testing and the Three Lines Model
Key Takeaways
- Detailed Content Outline task 2.C makes the privacy officer a participant in designing internal controls, not merely an auditor who inspects them afterward.
- Preventive controls stop a violation before it happens, detective controls surface it after it happens, and corrective controls restore the state — a program weighted only toward detection is chronically late.
- Under the Three Lines Model, operations owns and executes the control, compliance and privacy set standards and monitor, and internal audit provides independent assurance; the privacy officer cannot occupy all three lines.
- A control is only as good as its documented owner, frequency, evidence artifact, and failure escalation path; controls without evidence cannot be defended to OCR.
- Automated preventive controls such as break-the-glass prompts, role-based access provisioning, and outbound email data-loss prevention scale far better than periodic manual review.
Privacy Internal Controls: Design, Testing and the Three Lines Model
Task 2.C of the outline is one line long — participate in the development of internal controls — and it is easy to skim past. It is also the task that separates a privacy office that reports problems from one that prevents them. Chapter 7 covers auditing and monitoring, which is how you find out whether controls worked. This section is about designing the controls in the first place.
The word participate is doing deliberate work. The privacy officer does not own operational controls; the department that runs the process owns them. The privacy officer specifies what the control must accomplish, reviews the design, and verifies that evidence is produced. Owning both the control and its assurance destroys the independence the program depends on.
1. Three Control Types, Three Different Jobs
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| PRIVACY CONTROL TAXONOMY AND WHERE IT ACTS |
| |
| PREVENTIVE -------> DETECTIVE -------> CORRECTIVE |
| Stops the event Finds the event Restores the state |
| BEFORE it occurs AFTER it occurs and prevents recurrence |
| ---------------------------- ---------------------------- -------------------------|
| • Role-based access provisioning • EHR audit-trail alerting • Access revocation |
| • Break-the-glass justification • Outbound email DLP alerts • Sanction application |
| prompt before chart opens • Quarterly access recertification • Retrieval / attestation |
| • Mandatory BAA gate in the • Vendor SOC 2 review • of deletion |
| procurement workflow • Fax misdirect log review • Policy and workflow |
| • Automatic session timeout • redesign |
| • Encryption enforced at rest • Targeted retraining |
| and in transit |
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A program's control mix tells you its maturity. Newly built programs are almost entirely detective — they discover snooping through audit reports weeks after the access. Mature programs push controls left: the same snooping is deterred by a break-the-glass prompt that warns the user their access will be reviewed and attributed. Every incident post-mortem should end with the question "what preventive control would have made this impossible, and what would it cost?"
2. The Three Lines Model Applied to Privacy
| Line | Who | Privacy Responsibility | Failure Mode When Blurred |
|---|---|---|---|
| First line | Operating departments — HIM, registration, nursing, IT, revenue cycle | Own and execute the control; produce the evidence | If the privacy office executes first-line controls, operations stops feeling accountable for them |
| Second line | Privacy and compliance | Set the control standard, advise on design, monitor performance, aggregate and report risk | If the second line only advises and never monitors, control failures surface only at audit |
| Third line | Internal audit | Independent assurance that first- and second-line controls exist and operate | If internal audit reports to the same executive who owns the failing process, assurance is not independent |
[!CAUTION] The most common structural defect in small and mid-sized organizations is a privacy officer who designs the control, performs the control, tests the control, and reports on the control. That is not a program; it is a single point of failure with a title. Even where headcount is genuinely limited, the privacy officer should push execution to the process owner and reserve the second-line monitoring role, then arrange third-line assurance through internal audit, a peer review, or a periodic external assessment.
3. Designing a Control That Can Be Defended
A control is not a sentence in a policy. Before a control is accepted, six attributes must be recorded:
| Attribute | Question It Answers | Example — Terminated User Access |
|---|---|---|
| Objective | What risk does this reduce? | Prevent post-termination PHI access |
| Owner | Which named role executes it? | IT identity and access management lead |
| Trigger and frequency | When does it run? | On HR termination event; daily reconciliation batch |
| Method | Automated or manual, and how? | Automated deprovisioning from the HR system of record, with a daily exception report |
| Evidence artifact | What proves it ran? | Deprovisioning log with timestamps; signed exception review |
| Failure escalation | What happens when it fails? | Exceptions older than 24 hours escalate to the CISO and privacy officer |
If the evidence artifact column is blank, the control cannot be tested and cannot be defended. OCR data requests do not ask whether you have a policy requiring timely access termination; they ask for the termination log and the exceptions.
Control Rationalization
Programs accumulate controls the way attics accumulate boxes. Every incident adds a new manual check, and nothing is ever retired. Periodically map controls to the risks in the risk assessment and look for:
- Orphan controls that mitigate a risk the organization no longer runs.
- Redundant manual controls that duplicate a now-automated preventive control.
- Gap risks — high-rated risks with only a detective control and no preventive one.
- Untested controls that no one has produced evidence for in over a year.
4. Where Privacy Controls Most Often Break
- Provisioning without a role model. Access is granted by copying a colleague's profile. Within two years, every nurse on the unit has whatever the most privileged nurse had. The control that matters is a maintained role catalog with periodic recertification, not a request form.
- BAA gate outside the procurement path. If a department can buy software with a purchasing card, the BAA control does not exist. The control must sit in the workflow that actually spends money.
- Manual controls with no capacity. A policy requiring review of every fax confirmation sheet in a hospital that sends 4,000 faxes a month is a control on paper only. Either sample statistically or automate.
- Controls owned by a vacant role. When the named owner leaves, the control silently stops. Ownership belongs to a position, and transitions must include a control handoff.
- No linkage to the work plan. Controls that are not represented in the annual privacy work plan get no testing time and no budget.
[!TIP] When you are asked on the exam what a privacy officer should do about a recurring incident type, the strongest answers are usually those that change a control, not those that add a training module or issue a reminder. Training is a control, but it is among the weakest; engineering the failure out of the workflow is stronger, and the outline's emphasis on internal controls reflects that hierarchy.
After a third incident in which terminated employees retained EHR access for several days, a privacy officer proposes adding a monthly manual audit of active accounts against the HR roster. What is the strongest critique of this proposal?
Under the Three Lines Model as applied to a privacy program, which allocation of responsibility is correct?
A privacy officer documents a new control requiring department managers to 'periodically review staff access appropriateness.' An internal auditor rejects the control design. What is the most likely deficiency?