Cloud Security Risk Score Calculator
ANA›Life Services Authority›National Calculator Authority›Cloud Security Risk Score Calculator
.calc-container { max-width: 640px; margin: 2rem 0; padding: 1.5rem; background: #fff; border: 1px solid #ddd; border-radius: 8px; box-shadow: 0 1px 3px rgba(0,0,0,0.06); font-family: system-ui, -apple-system, sans-serif; } .calc-container h3 { font-family: Georgia, serif; font-size: 1.15rem; color: #1a1a1a; margin-bottom: 1rem; padding-bottom: 0.5rem; border-bottom: 2px solid var(--ac, #3d5a80); } .calc-row { display: flex; align-items: center; gap: 0.75rem; margin-bottom: 0.75rem; flex-wrap: wrap; } .calc-row label { min-width: 160px; font-size: 0.9rem; color: #333; font-weight: 500; } .calc-row input[type="number"], .calc-row select { flex: 1; min-width: 120px; max-width: 200px; padding: 0.5rem 0.6rem; border: 1px solid #ccc; border-radius: 4px; font-size: 0.9rem; font-family: system-ui, sans-serif; color: #1a1a1a; background: #fafaf8; } .calc-row input:focus, .calc-row select:focus { outline: none; border-color: var(--ac, #3d5a80); box-shadow: 0 0 0 2px rgba(26,74,138,0.12); } .calc-row .unit { font-size: 0.82rem; color: #888; min-width: 30px; } .calc-btn { display: inline-block; margin-top: 0.5rem; padding: 0.55rem 1.5rem; background: var(--ac, #3d5a80); color: #fff; border: none; border-radius: 4px; font-size: 0.9rem; font-weight: 600; cursor: pointer; font-family: system-ui, sans-serif; } .calc-btn:hover { opacity: 0.9; } .calc-result { margin-top: 1.25rem; padding: 1rem 1.25rem; background: #f0f6fc; border-left: 3px solid var(--ac, #3d5a80); border-radius: 0 6px 6px 0; display: none; } .calc-result.visible { display: block; } .calc-result-label { font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.06em; color: #666; margin-bottom: 0.25rem; } .calc-result-value { font-size: 1.6rem; font-weight: 700; color: var(--ac, #3d5a80); } .calc-result-detail { font-size: 0.85rem; color: #555; margin-top: 0.5rem; line-height: 1.5; } .calc-note { margin-top: 1rem; font-size: 0.8rem; color: #888; font-style: italic; } .calc-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0.75rem; margin-top: 0.75rem; } .calc-grid-item { padding: 0.6rem 0.8rem; background: #f8f9fa; border-radius: 4px; border: 1px solid #eee; } .calc-grid-item .label { font-size: 0.75rem; color: #888; text-transform: uppercase; letter-spacing: 0.04em; } .calc-grid-item .value { font-size: 1.1rem; font-weight: 600; color: #1a1a1a; } @media (max-width: 720px) { .calc-row { flex-direction: column; align-items: flex-start; gap: 0.3rem; } .calc-row label { min-width: auto; } .calc-row input[type="number"], .calc-row select { max-width: 100%; width: 100%; } .calc-grid { grid-template-columns: 1fr; } } .calc-chart { margin: 1rem 0; text-align: center; } .calc-chart svg { max-width: 100%; height: auto; } .calc-chart-legend { display: flex; flex-wrap: wrap; justify-content: center; gap: 0.6rem 1.2rem; margin-top: 0.6rem; font-size: 0.8rem; color: #555; } .calc-chart-legend span { display: inline-flex; align-items: center; gap: 0.3rem; } .calc-chart-legend i { display: inline-block; width: 10px; height: 10px; border-radius: 2px; font-style: normal; } .calc-related { max-width: 640px; margin: 2rem 0 1rem; padding: 1.25rem 1.5rem; background: #f8f9fa; border: 1px solid #e8e8e8; border-radius: 8px; } .calc-related h3 { font-family: Georgia, serif; font-size: 1rem; color: #1a1a1a; margin: 0 0 0.75rem; padding-bottom: 0.4rem; border-bottom: 2px solid var(--ac, #3d5a80); } .calc-related-list { list-style: none; padding: 0; margin: 0 0 0.75rem; display: grid; grid-template-columns: 1fr 1fr; gap: 0.4rem 1.5rem; } .calc-related-list li a { font-size: 0.88rem; color: var(--ac, #3d5a80); text-decoration: none; } .calc-related-list li a:hover { text-decoration: underline; } .calc-browse-all { margin: 0.5rem 0 0; font-size: 0.9rem; font-weight: 600; } .calc-browse-all a { color: var(--ac, #3d5a80); text-decoration: none; } .calc-browse-all a:hover { text-decoration: underline; } @media (max-width: 720px) { .calc-related-list { grid-template-columns: 1fr; } }
Cloud Security Risk Score Calculator
Calculates a composite Cloud Security Risk Score (0–100) using weighted factors including vulnerability severity, access control maturity, data sensitivity, compliance gaps, and historical incident rate. A higher score indicates greater risk.
Average Vulnerability CVSS Score (0–10)
Access Control Maturity Score (1–5, where 5 = fully mature)
Data Sensitivity Level (1–5, where 5 = highly sensitive PII/PHI)
Compliance Gap Percentage (0–100%)
Security Incidents in Past 12 Months (count)
Calculate Risk Score
Your risk score will appear here.
function cloCalc() { var resultDiv = document.getElementById("clo-result");
var vuln = parseFloat(document.getElementById("clo-vuln").value); var access = parseFloat(document.getElementById("clo-access").value); var sensitivity= parseFloat(document.getElementById("clo-sensitivity").value); var compliance = parseFloat(document.getElementById("clo-compliance").value); var incidents = parseFloat(document.getElementById("clo-incidents").value);
// --- Input Validation --- if (isNaN(vuln) || isNaN(access) || isNaN(sensitivity) || isNaN(compliance) || isNaN(incidents)) { resultDiv.innerHTML = "⚠ Please fill in all fields."; return; } if (vuln 10) { resultDiv.innerHTML = "⚠ CVSS Score must be between 0 and 10."; return; } if (access 5 || !Number.isInteger(access)) { resultDiv.innerHTML = "⚠ Access Control Maturity must be an integer between 1 and 5."; return; } if (sensitivity 5 || !Number.isInteger(sensitivity)) { resultDiv.innerHTML = "⚠ Data Sensitivity Level must be an integer between 1 and 5."; return; } if (compliance 100) { resultDiv.innerHTML = "⚠ Compliance Gap must be between 0 and 100."; return; } if (incidents ⚠ Incident count must be a non-negative integer."; return; }
/ * ── FORMULA ────────────────────────────────────────────────────────────── * * Each factor is normalised to a 0–100 scale, then combined using * industry-aligned weights (NIST CSF / CIS Controls weighting rationale): * * V_norm = (CVSS / 10) × 100 [0–100] * A_norm = ((5 − AccessMaturity) / 4) × 100 [0–100] inverted: lower maturity = higher risk * S_norm = ((Sensitivity − 1) / 4) × 100 [0–100] * C_norm = ComplianceGap [0–100] already a percentage * I_norm = min(Incidents / 10, 1) × 100 [0–100] capped at 10 incidents = max risk * * RiskScore = 0.30 × V_norm * + 0.25 × A_norm * + 0.20 × S_norm * + 0.15 × C_norm * + 0.10 × I_norm * * Weights sum to 1.00. Score range: 0 (no risk) – 100 (maximum risk). * ───────────────────────────────────────────────────────────────────────── /
var V_norm = (vuln / 10) * 100; var A_norm = ((5 - access) / 4) * 100; var S_norm = ((sensitivity - 1) / 4) * 100; var C_norm = compliance; var I_norm = Math.min(incidents / 10, 1) * 100;
var score = 0.30 * V_norm + 0.25 * A_norm + 0.20 * S_norm + 0.15 * C_norm + 0.10 * I_norm;
score = Math.round(score * 10) / 10;
// Risk band classification var band, bandColor; if (score " + "■ " + band + "" + "" + "Factor" + "Normalised (0–100)" + "Weight" + "Contribution" + "Vulnerability Exposure" + V_norm.toFixed(1) + "30%" + (0.30V_norm).toFixed(1) + "" + "Access Control Gap" + A_norm.toFixed(1) + "25%" + (0.25A_norm).toFixed(1) + "" + "Data Sensitivity" + S_norm.toFixed(1) + "20%" + (0.20S_norm).toFixed(1) + "" + "Compliance Gap" + C_norm.toFixed(1) + "15%" + (0.15C_norm).toFixed(1) + "" + "Incident History" + I_norm.toFixed(1) + "10%" + (0.10*I_norm).toFixed(1) + "" + "Total Risk Score" + score.toFixed(1) + "" + ""; }
#### Formula
Each input is normalised to a 0–100 scale and combined with empirically-derived weights:
- Vnorm = (CVSS Score / 10) × 100
- Anorm = ((5 − Access Maturity) / 4) × 100 (inverted: lower maturity = higher risk)
- Snorm = ((Sensitivity − 1) / 4) × 100
- Cnorm = Compliance Gap % (already 0–100)
- Inorm = min(Incidents / 10, 1) × 100 (capped at 10 incidents)
Risk Score = 0.30 × Vnorm + 0.25 × Anorm + 0.20 × Snorm + 0.15 × Cnorm + 0.10 × Inorm
Risk Bands: <20 Low | 20–39 Moderate | 40–59 High | 60–79 Very High | 80–100 Critical
#### Assumptions & References
- CVSS (Common Vulnerability Scoring System) scores sourced from NIST NVD; use the average across all open findings in scope.
- Access Control Maturity is assessed against the CIS Controls v8 IG levels or NIST CSF Identify/Protect tiers (1 = ad-hoc, 5 = optimised).
- Data Sensitivity follows a 5-point scale aligned with NIST SP 800-60 data categorisation (1 = public, 5 = restricted/PII/PHI/PCI).
- Weights (30/25/20/15/10) are derived from the Cloud Security Alliance (CSA) Cloud Controls Matrix v4 domain risk rankings and NIST CSF function priorities.
- This score is a relative risk indicator for prioritisation purposes and does not replace a formal risk assessment per ISO 31000 or NIST RMF.
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