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Cloud Security Health Score Calculator

Roll seven cloud security pillar scores into one weighted health score, penalise open critical findings and name the weakest pillar.

About Cloud Security Health Score Calculator

The pillar weights follow blast radius: identity is the cloud control plane so it carries 20%, while container and supply chain carry 10% each because their failures are usually contained to a workload. Open critical findings are subtracted rather than averaged in, capped at 15 points, so a good-looking set of pillar scores cannot hide a live backlog of urgent work. Executives need one number and engineers need to know where to spend the next sprint, and a weighted roll-up with an explicit weakest-pillar uplift answers both questions from the same inputs.

Formulas

Cloud Security Health Score

Health score = identity × 0.20 + data × 0.15 + network × 0.15 + detection × 0.15 + compliance × 0.15 + container × 0.10 + supply chain × 0.10 − critical finding penalty.

weightedBase
Weighted average of the seven pillar scores
criticalPenalty
min(15, 0.5 × open critical findings)
healthScore
0–100 health score after the penalty

Marginal investment

Uplift if the weakest pillar reached 85 = health score + (85 − weakest pillar score) × that pillar's weight — the best single investment available.

minPillar
Lowest pillar score
weakestWeight
Weight carried by the weakest pillar
upliftIfWeakestFixed
Health score after lifting that one pillar to 85

Worked example

With the default values below, Cloud Security Health Score Calculator returns Cloud Security Health Score of 58.7. Change any input above and every figure here is recalculated in your browser.

Inputs used

Identity and access pillar scoreaccepts 0–100 / 100
62 / 100
Data protection pillar scoreaccepts 0–100 / 100
74 / 100
Network security pillar scoreaccepts 0–100 / 100
68 / 100
Detection and response pillar scoreaccepts 0–100 / 100
71 / 100
Compliance pillar scoreaccepts 0–100 / 100
80 / 100
Container and Kubernetes pillar scoreaccepts 0–100 / 100
58 / 100
Supply chain pillar scoreaccepts 0–100 / 100
55 / 100
Open critical findings across all pillarsaccepts 0–200,000 findings
18 findings
Target health scoreaccepts 0–100 / 100
80 / 100

Results

Cloud Security Health Score
58.7 / 100
Grade
D — Weak
Weighted Pillar Average
67.7 / 100
Critical Finding Penalty
9.0 points
Weakest Pillar
Supply chain — signing, provenance and dependency control
Spread Between Best and Worst Pillar
25 points
Score If the Weakest Pillar Reached 85
61.7 / 100
Points to Target
21.4 points
Verdict
The pillars are badly unbalanced; an attacker uses the weakest one, not the average

Step by step

  1. 1Values used
  2. 2Cloud Security Health Score
  3. 3Marginal investment
  4. 4Cloud Security Health Score= 58.7 / 100
  5. 5Grade= D — Weak
  6. 6Weighted Pillar Average= 67.7 / 100
  7. 7Critical Finding Penalty= 9.0 points
  8. 8Weakest Pillar= Supply chain — signing, provenance and dependency control
  9. 9Spread Between Best and Worst Pillar= 25 points

Assumptions and limits

  • The result is derived only from the 9 inputs listed above. Anything not among them is not part of the calculation.
  • In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
  • Figures are rounded for display to 1 decimal place, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Frequently Asked Questions

How is Cloud Security Health Score calculated?

Health score = identity × 0.20 + data × 0.15 + network × 0.15 + detection × 0.15 + compliance × 0.15 + container × 0.10 + supply chain × 0.10 − critical finding penalty. The pillar weights follow blast radius: identity is the cloud control plane so it carries 20%, while container and supply chain carry 10% each because their failures are usually contained to a workload. Open critical findings are subtracted rather than averaged in, capped at 15 points, so a good-looking set of pillar scores cannot hide a live backlog of urgent work.

Why does Cloud Security Health Score matter?

Executives need one number and engineers need to know where to spend the next sprint, and a weighted roll-up with an explicit weakest-pillar uplift answers both questions from the same inputs.

What values do I need to enter?

This calculator takes 9 inputs: Identity and access pillar score, Data protection pillar score, Network security pillar score, Detection and response pillar score, Compliance pillar score, Container and Kubernetes pillar score, Supply chain pillar score, Open critical findings across all pillars, Target health score. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.

Should the pillar weights be the same for every organisation?

No. These are sensible defaults for a typical cloud estate; a company whose product is a Kubernetes platform should weight containers far higher, and a regulated data business should weight data protection and compliance up. Set the weights once, write down why, and keep them stable so the trend stays meaningful.

Why does the average hide risk?

Because attackers do not average. A 78 built from seven pillars near 78 is a genuinely decent posture; the same 78 built from a 95 and a 45 means there is one route in that nobody has closed. That is why pillar spread and the weakest pillar are shown next to the headline number.

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