Home Network Risk Assessment Calculator
ANA›Life Services Authority›National Calculator Authority›Home Network Risk Assessment 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; } }
Home Network Risk Assessment Calculator
Evaluate your home network's security risk score based on router configuration, device count, password strength, encryption, and usage habits. A lower score indicates a more secure network.
Router Age (years)
How old is your primary router?
Firmware Up to Date?
Yes – updated within last 6 months No / Unknown
Wi-Fi Encryption Standard
None (Open network) WEP (deprecated) WPA (TKIP) WPA2 (AES) WPA3
Using Default Router Credentials?
Yes No
Wi-Fi Password Length (characters)
WPA2/WPA3 supports up to 63 characters.
Number of Connected Devices
Include phones, laptops, smart TVs, IoT devices, etc.
Number of IoT / Smart Home Devices
Smart bulbs, cameras, thermostats, voice assistants, etc.
Guest Network Enabled?
Yes No
Router Firewall Enabled?
Yes No / Unknown
VPN in Use on Network?
Yes No
Remote Management Enabled on Router?
Yes No
Frequency of Public Wi-Fi Use
Never Rarely (a few times a year) Sometimes (monthly) Often (weekly or more)
Calculate Risk Score
function homCalc() { // --- Read inputs --- var routerAge = parseFloat(document.getElementById('hom-router-age').value); var firmwareOk = parseInt(document.getElementById('hom-firmware-updated').value); var encryption = parseInt(document.getElementById('hom-encryption').value); var defaultCreds = parseInt(document.getElementById('hom-default-creds').value); var pwdLength = parseFloat(document.getElementById('hom-password-length').value); var deviceCount = parseFloat(document.getElementById('hom-device-count').value); var iotDevices = parseFloat(document.getElementById('hom-iot-devices').value); var guestNetwork = parseInt(document.getElementById('hom-guest-network').value); var firewall = parseInt(document.getElementById('hom-firewall').value); var vpn = parseInt(document.getElementById('hom-vpn').value); var remoteMgmt = parseInt(document.getElementById('hom-remote-mgmt').value); var publicWifi = parseInt(document.getElementById('hom-public-wifi').value);
// --- Validation --- var errors = []; if (isNaN(routerAge) || routerAge 20) errors.push("Router age must be 0–20 years."); if (isNaN(pwdLength) || pwdLength 63) errors.push("Password length must be 0–63 characters."); if (isNaN(deviceCount) || deviceCount 200) errors.push("Device count must be 1–200."); if (isNaN(iotDevices) || iotDevices 100) errors.push("IoT device count must be 0–100.");
if (errors.length > 0) { var res = document.getElementById('hom-result'); res.style.display = 'block'; res.innerHTML = '⚠ Please fix the following:' + errors.join('') + ''; return; }
// ============================================================ // RISK SCORE FORMULA (0 = perfect security, 100 = maximum risk) // // Risk = R_router + R_encryption + R_credentials + R_password // + R_devices + R_iot + R_network + R_behavior // // Each component is capped and contributes a weighted sub-score. // Final score is clamped to [0, 100]. // ============================================================
// 1. Router Age Risk (max 10 pts) // R_router = min(routerAge / 10, 1) * 10 // Rationale: routers older than 10 years rarely receive security patches. var R_router = Math.min(routerAge / 10, 1) * 10;
// 2. Firmware Risk (max 8 pts) // R_firmware = (1 - firmwareOk) * 8 var R_firmware = (1 - firmwareOk) * 8;
// 3. Encryption Risk (max 20 pts) // Encryption levels: None=0, WEP=1, WPA=2, WPA2=3, WPA3=4 // encryptionRiskMap maps level → risk points var encryptionRiskMap = {0: 20, 1: 16, 2: 10, 3: 4, 4: 0}; var R_encryption = encryptionRiskMap[encryption];
// 4. Default Credentials Risk (max 15 pts) // R_credentials = defaultCreds * 15 var R_credentials = defaultCreds * 15;
// 5. Password Strength Risk (max 12 pts) // Entropy proxy: risk decreases as password length increases. // R_password = max(0, (1 - pwdLength / 20)) * 12 // A password of 20+ characters scores 0 risk. var R_password = Math.max(0, 1 - pwdLength / 20) * 12;
// 6. Device Count Risk (max 10 pts) // More devices = larger attack surface. // R_devices = min(deviceCount / 30, 1) * 10 var R_devices = Math.min(deviceCount / 30, 1) * 10;
// 7. IoT Device Risk (max 10 pts) // IoT devices often have weak default security. // R_iot = min(iotDevices / 10, 1) * 10 var R_iot = Math.min(iotDevices / 10, 1) * 10;
// 8. Network Configuration Risk (max 15 pts) // Components: guest network (-3 if enabled), firewall (-4 if enabled), // VPN (-3 if enabled), remote management (+5 if enabled) // Base = 10; subtract protections, add remote mgmt risk. var R_network = 10 - (guestNetwork * 3) - (firewall * 4) - (vpn * 3) + (remoteMgmt * 5); R_network = Math.max(0, Math.min(R_network, 15));
// 9. Behavior Risk – Public Wi-Fi (max 10 pts) // publicWifi: 0=Never, 1=Rarely, 2=Sometimes, 3=Often // R_behavior = (publicWifi / 3) * 10 var R_behavior = (publicWifi / 3) * 10;
// --- Total Risk Score --- var totalRisk = R_router + R_firmware + R_encryption + R_credentials + R_password + R_devices + R_iot + R_network + R_behavior;
// Clamp to [0, 100] totalRisk = Math.max(0, Math.min(100, totalRisk));
// --- Risk Level Classification --- var riskLevel, riskColor, riskEmoji, advice; if (totalRisk ' + '' + c[0] + '' + '' + c[1] + ' / ' + c[2] + '' + '' + '' + '' + '' + ''; }).join('');
var html = '### ' + riskEmoji + ' Risk Score: ' + totalRisk.toFixed(1) + ' / 100 — ' + riskLevel + ' Risk ' + 'Recommendation: ' + advice + '
' + '#### Risk Component Breakdown ' + '' + '' + 'Component' + 'Score / Max' + 'Severity' + '' + tableRows + '';
var res = document.getElementById('hom-result'); res.style.display = 'block'; res.innerHTML = html; }
#### Formula
Total Risk Score (0–100) = Rrouter + Rfirmware + Rencryption + Rcredentials + Rpassword + Rdevices + Riot + Rnetwork + Rbehavior
- Rrouter = min(age / 10, 1) × 10 [max 10 pts] — older routers lack security patches
- Rfirmware = (1 − firmwareUpdated) × 8 [max 8 pts]
- Rencryption = {None: 20, WEP: 16, WPA: 10, WPA2: 4, WPA3: 0} [max 20 pts]
- Rcredentials = defaultCreds × 15 [max 15 pts]
- Rpassword = max(0, 1 − pwdLength / 20) × 12 [max 12 pts] — 20+ char password = 0 risk
- Rdevices = min(deviceCount / 30, 1) × 10 [max 10 pts] — larger attack surface
- Riot = min(iotCount / 10, 1) × 10 [max 10 pts] — IoT devices often poorly secured
- Rnetwork = clamp(10 − guestNet×3 − firewall×4 − vpn×3 + remoteMgmt×5, 0, 15) [max 15 pts]
- Rbehavior = (publicWifiFreq / 3) × 10 [max 10 pts]
Final score is clamped to [0, 100]. Lower is better.
Risk Levels: 0–19 Very Low | 20–39 Low | 40–59 Moderate | 60–79 High | 80–100 Critical
#### Assumptions & References
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