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Calcrivo

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.

Inputs

/ 100
/ 100
/ 100
/ 100
/ 100
/ 100
/ 100
findings
/ 100

Cloud Security Health Score

58.7/ 100

Grade

D — Weak

Weighted Pillar Average

67.7/ 100

Critical Finding Penalty

9.0points

Weakest Pillar

Supply chain — signing, provenance and dependency control

Spread Between Best and Worst Pillar

25points

Score If the Weakest Pillar Reached 85

61.7/ 100

Points to Target

21.4points

Verdict

The pillars are badly unbalanced; an attacker uses the weakest one, not the average

Step by step

  1. Values used

    Identity and access pillar score = 62 / 100; Data protection pillar score = 74 / 100; Network security pillar score = 68 / 100; Detection and response pillar score = 71 / 100; Compliance pillar score = 80 / 100; Container and Kubernetes pillar score = 58 / 100; Supply chain pillar score = 55 / 100; Open critical findings across all pillars = 18 findings; Target health score = 80 / 100

  2. 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.

  3. Marginal investment

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

  4. Cloud Security Health Score

    = 58.7 / 100

  5. Grade

    = D — Weak

  6. Weighted Pillar Average

    = 67.7 / 100

  7. Critical Finding Penalty

    = 9.0 points

  8. Weakest Pillar

    = Supply chain — signing, provenance and dependency control

  9. Spread Between Best and Worst Pillar

    = 25 points

How it works

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

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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