toolbox
Home / AI, Data & Technology / DDoS Attack Downtime Cost Estimator

DDoS Attack Downtime Cost Estimator

This estimator measures the business cost of a DDoS-related outage from its duration, revenue interruption, employee productivity loss, and technical response expense. It also allows a recovery-efficiency percentage to reduce the portion of hourly losses that can be avoided through failover, traffic diversion, or continued operations.

The model is useful for incident reviews, continuity planning, and evaluating whether additional resilience is economically reasonable. It calculates a scenario cost for one outage, so it should not be interpreted as annual risk unless it is combined with an expected event frequency.

Scenario inputs

hours
USD
USD
USD
%
Result
—
Estimated DDoS downtime cost
Gross interruption loss—
Loss avoided—
Effective cost per hour—

1. Enter outage duration
Use the period during which service performance is materially below the chosen business threshold.

2. Estimate hourly revenue exposure
Enter revenue expected to be permanently lost or economically impaired per hour.

3. Add productivity loss
Include employee or contractor time that cannot be productively reassigned.

4. Add technical response cost
Enter incremental mitigation, vendor, engineering, and incident-handling expenses.

5. Reflect continuity measures
Estimate the share of interruption loss avoided through failover or alternate processes.

Gross Interruption Loss = Duration × (Revenue at Risk per Hour + Productivity Loss per Hour)

Avoided Loss = Gross Interruption Loss × Continuity Rate

Total Downtime Cost = Gross Interruption Loss − Avoided Loss + Technical Response Cost

What the result means

The result estimates the cost of one DDoS disruption under the entered duration and loss rates.

Only include revenue that is truly lost or delayed beyond recovery; deferred transactions may not equal permanent loss.

Given:

  • Duration: 6 hours
  • Revenue at risk: $28,000 per hour
  • Productivity loss: $7,000 per hour
  • Technical response cost: $22,000
  • Continuity avoidance: 15%

Calculation:
Gross interruption loss = 6 × ($28,000 + $7,000) = $210,000
Avoided loss = $210,000 × 0.15 = $31,500
Total cost = $210,000 − $31,500 + $22,000 = $200,500

Result: The estimated cost of this outage is $200,500.

Should I use total hourly revenue?

Use only the amount at risk because of the outage. Revenue that is merely delayed and later recovered should be treated carefully.

What belongs in productivity loss?

Include idle labor and disruption-related inefficiency, net of work that can be redirected to other tasks.

Can continuity avoidance be 100%?

Only when all modeled hourly losses are prevented despite the disruption. Technical response cost can still remain.

Does the calculator include reputational damage?

Not automatically. Add it to response cost only when you have a defensible monetary estimate and it is not double counted.

How can this result support resilience planning?

Compare scenario cost with the cost of capacity, mitigation, failover, and response improvements that reduce duration or hourly impact.