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Risk Responses: Mitigate, Transfer, Avoid, Accept

Risk · 2 min read

Four ways to respond

Once a risk has been assessed, there are only four basic responses. A riverside warehouse at risk of flooding shows them clearly.

Mitigate with barriers, transfer with insurance, avoid by moving, accept knowingly.
ResponseWhat it meansIT examplesWhen it fits
Mitigate (reduce)Put in controls to make the risk less likely or less damagingMFA, encryption, patching, redundant systems, trainingRisk is above appetite and controls are cost-effective
Transfer (share)Shift the financial consequences to someone elseCyber insurance, contract indemnities, outsourcing with penaltiesHigh-impact, low-likelihood events
AvoidStop, or don’t start, the activityWithdraw a product, stop storing card data, retire a legacy systemRisk is unacceptable and can’t be treated cost-effectively
AcceptKnowingly live with the riskDocument the decision; monitorWithin appetite, or treatment costs more than it saves

Responses can be combined: mitigate to make an event less likely, then insure against what’s left.

Transfer has limits

Insurance and contracts move money. They don’t move:

  • accountability: you’re still responsible for your data and your customers
  • reputational damage
  • regulatory duties: fines often can’t be insured, and regulators hold the organisation accountable

The same goes for outsourcing: you can outsource the work, not the accountability.

Acceptance is a decision, not a shrug

Accepting a risk is perfectly legitimate when it’s:

  • informed: the risk has been assessed and understood
  • within appetite, or approved at a higher level (often senior management or the board) if it’s beyond it
  • documented, with the owner, the reason and a review date
  • monitored, so changes trigger a fresh look

Ignoring a risk, or not knowing about it, isn’t acceptance. And IT staff can’t accept business risks: the business risk owner does.

Example. A legacy system can’t support MFA. Replacing it costs 2 million and takes 18 months. Management puts it behind a VPN with MFA and adds extra monitoring (mitigate), and the business owner formally accepts the remaining risk until the replacement, reviewing it every quarter (accept).

How the exam asks about it

If the question asks…The answer is usually…
Buying cyber insurance is an example of…Risk transfer
Does insurance transfer responsibility?No; only financial impact
Stopping an activity because the risk is too highAvoidance
Who can accept residual risk?The business risk owner / senior management
Requirement for valid risk acceptanceAn informed, documented decision at the right level
Response when the risk is within appetiteAcceptance (with monitoring)

In short

  • Mitigate: reduce how likely or how bad the risk is, with controls.
  • Transfer: shift the financial impact to someone else, through insurance or contracts.
  • Avoid: stop doing the activity that creates the risk.
  • Accept: knowingly live with the risk, because it's within appetite or fixing it costs more than it saves.
  • Transferring risk moves money, not accountability; reputational and regulatory impact stay with you.
  • Accepting a risk is a documented decision by someone with authority, not just ignoring it.

Exam traps

  • Insurance transfers financial loss, not responsibility or reputational damage.
  • Ignoring a risk is not acceptance; acceptance is informed, documented and approved.
  • Outsourcing a process doesn't transfer accountability for it.
  • Avoidance is the only response that removes the risk completely, and you lose the activity's benefits too.
  • IT staff can't accept business risk on the business's behalf.

Slides

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CISA · Domain 2 · Risk

Risk Responses: Mitigate, Transfer, Avoid, Accept

The four things you can do about a risk, when each makes sense, who gets to decide, and the exam's favourite misunderstandings about insurance and acceptance.

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