# BeaverCheck Audit Report — https://polimi.it
**Date:** April 22, 2026
**URL:** https://polimi.it
**Overall Grade:** C (70/100)
**Report:** https://beavercheck.com/results/f3c82807-0ce5-43bd-8381-1e6dc453c815
## Top Findings
1. **[CRITICAL]** Content-Security-Policy header is missing — Security > Security Headers
2. **[CRITICAL]** No Content-Security-Policy header found — Security > Content Security Policy
3. **[CRITICAL]** Page weighs 45.2 MB (41.9 MB transferred) — Performance > Page Weight Budget
4. **[CRITICAL]** 1 button(s) with no accessible text — Accessibility > Link & Button Quality
5. **[CRITICAL]** 14 link(s) with no accessible text — Accessibility > Link & Button Quality
---
## Lighthouse Scores
| Category | Score |
|----------|-------|
| Performance | 50 |
| Accessibility | 95 |
| Best Practices | 96 |
| SEO | 85 |
---
## Security
### Security Headers (F — 20/100)
*2 of 10 headers properly configured*
- **[WARNING]** HSTS max-age is too short (15552000s, should be ≥ 31536000s) — A short max-age leaves a window for downgrade attacks. Set max-age to at least 31536000 (1 year).
- **[WARNING]** X-Content-Type-Options header is missing — This header prevents MIME-type sniffing, which can lead to XSS attacks. Set it to 'nosniff'.
- **[WARNING]** X-Frame-Options header is missing — This header prevents clickjacking by controlling who can embed your page in a frame. Set it to DENY or SAMEORIGIN.
- **[WARNING]** Referrer-Policy header is missing — Controls how much referrer information is sent with requests. Set to 'strict-origin-when-cross-origin' or stricter.
- **[WARNING]** Permissions-Policy header is missing — Controls which browser features (camera, microphone, geolocation) are allowed. Set it to restrict unused features.
- **[CRITICAL]** Content-Security-Policy header is missing — CSP is the most important header for preventing XSS attacks. See the CSP section for detailed analysis.
- **[WARNING]** Cross-Origin-Opener-Policy header is missing — COOP isolates your browsing context, preventing cross-origin side-channel attacks. Set to 'same-origin'.
- **[WARNING]** Cross-Origin-Embedder-Policy header is missing — COEP prevents loading cross-origin resources without explicit permission. Required for SharedArrayBuffer and high-resolution timers.
- **[PASS]** X-Powered-By header is not present
- **[PASS]** Server header is present without version info
### Content Security Policy (F — 0/100)
*No enforcing CSP policy found*
- **[CRITICAL]** No Content-Security-Policy header found — CSP is the most effective defense against XSS attacks. Add a Content-Security-Policy header to restrict resource loading.
### TLS & Certificates (A+ — 100/100)
*TLS 1.3, 7 checks passed*
- **[PASS]** TLS 1.3 is used
- **[PASS]** Strong cipher suite is used
- **[INFO]** HTTP/2 is not negotiated — HTTP/2 provides multiplexing and header compression for better performance.
- **[PASS]** Certificate is valid (expires in 216 days)
- **[PASS]** Certificate chain has 3 certificates
- **[PASS]** Certificate uses modern signature algorithm
- **[PASS]** Certificate covers 8 domain(s)
- **[PASS]** Certificate is issued by a trusted CA
### Cookie Security (A+ — 100/100)
*No cookies set — no cookie security risks*
- **[PASS]** No cookies set — no cookie security risks
---
## Advanced Security
### Subresource Integrity (C — 60/100)
*6 of 12 external resources have SRI*
- **[PASS]** link from cdn.jsdelivr.net has SRI protection
- **[PASS]** link from cdn.jsdelivr.net has SRI protection
- **[PASS]** link from unicons.iconscout.com has SRI protection
- **[WARNING]** External script from ingestion.webanalytics.italia.it lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code.
- **[WARNING]** External script from www.googletagmanager.com lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code.
- **[WARNING]** External script from www.googletagmanager.com lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code.
- **[WARNING]** External script from snippet.maze.co lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code.
- **[WARNING]** External link from fonts.googleapis.com lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code.
- **[WARNING]** External script from snippet.maze.co lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code.
- **[PASS]** script from ajax.googleapis.com has SRI protection
- **[PASS]** script from cdn.jsdelivr.net has SRI protection
- **[PASS]** script from cdn.jsdelivr.net has SRI protection
### JS Library Vulnerabilities (A+ — 100/100)
*No known vulnerabilities*
- **[PASS]** No known JavaScript library vulnerabilities detected
### Information Leakage (A+ — 100/100)
*No exposures*
- **[PASS]** security.txt is present — good practice
- **[PASS]** No sensitive files exposed
### Email Security (A — 85/100)
*DMARC: quarantine*
- **[PASS]** DMARC policy is quarantine — good protection
### Permissions-Policy (D — 40/100)
*No header set*
- **[WARNING]** No Permissions-Policy header — Consider adding a Permissions-Policy header to restrict browser feature access from embedded content.
### CORS Configuration (B — 80/100)
*No CORS headers*
- **[PASS]** No CORS headers present — secure default
---
## Performance
### Page Weight Budget (F — 0/100)
*41.9 MB transferred, 65 requests*
- **[CRITICAL]** Page weighs 45.2 MB (41.9 MB transferred)
- **[WARNING]** Images are 9.6 MB — compress or use modern formats — Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
- **[WARNING]** JavaScript is 736 KB — consider code splitting or lazy loading — Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
- **[INFO]** 65 HTTP requests
- **[INFO]** Estimated 8.8 g CO2 per page load
### Third-Party Impact (D — 50/100)
*100% third-party, 0 ms blocking*
- **[WARNING]** Third-party code accounts for 100% of page weight (41.9 MiB of 41.9 MiB)
- **[PASS]** Third-party blocking time is low (0 ms)
### Text Compression (A+ — 100/100)
*All text resources are compressed*
- **[PASS]** All text resources are compressed
### Image Optimization (C — 60/100)
*29 images, 0 KB saveable*
- **[WARNING]** https://www.polimi.it/fileadmin/asset/logo/IDEA_Le... is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS.
- **[WARNING]** https://www.polimi.it/fileadmin/_processed_/c/3/cs... is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS.
- **[WARNING]** https://www.polimi.it/fileadmin/asset/logo/banner-... is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS.
- **[WARNING]** https://www.polimi.it/fileadmin/asset/logo/Logo_Un... is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS.
- **[WARNING]** https://www.polimi.it/fileadmin/asset/logo/banner-... is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS.
### JS Execution Cost (F — 20/100)
*5024ms total JS execution*
- **[WARNING]** Unattributable: 2311ms CPU time
- **[WARNING]** https://www.polimi.it/: 1289ms CPU time
- **[WARNING]** https://www.googletagmanager.com/gtag/js?id=G-HCPV...: 374ms CPU time
- **[WARNING]** https://www.googletagmanager.com/gtm.js?id=GTM-TS7...: 265ms CPU time
- **[INFO]** https://www.polimi.it/_assets/f34691673face4b5c642...: 240ms CPU time
- **[WARNING]** Third-party scripts: 5024ms (100% of total)
### Font Loading (A+ — 100/100)
*2 fonts (33 KB)*
- **[INFO]** 2 font(s) use font-display: swap (FOUT risk but functional)
### JS Bundles (D — 40/100)
*13 scripts, 356 KB unused*
- **[WARNING]** https://www.googletagmanager.com/gtag/js?id=G-HCPV...: 116 KB unused (67%) — Consider code splitting or tree shaking to reduce unused code.
- **[WARNING]** https://www.googletagmanager.com/gtm.js?id=GTM-TS7...: 80 KB unused (54%) — Consider code splitting or tree shaking to reduce unused code.
- **[WARNING]** https://www.googletagmanager.com/gtag/js?id=G-HCPV...: 71 KB unused (41%) — Consider code splitting or tree shaking to reduce unused code.
- **[WARNING]** https://ingestion.webanalytics.italia.it/matomo.js: 38 KB unused (59%) — Consider code splitting or tree shaking to reduce unused code.
- **[WARNING]** https://cdn.jsdelivr.net/npm/swiper@11/swiper-bund...: 28 KB unused (65%) — Consider code splitting or tree shaking to reduce unused code.
- **[INFO]** Total unused JavaScript: 356 KB
### Resource Caching (A+ — 100/100)
*All resources properly cached*
- **[PASS]** No caching issues found
### Critical Rendering Path (A+ — 100/100)
*No render-blocking resources*
- **[PASS]** No render-blocking resources detected
### Resource Hints (A+ — 100/100)
*2 hints, 0 missing preconnects*
- **[PASS]** Page uses 2 resource hint(s)
### Page Weight Inventory (D — 40/100)
*65 resources · 41.9 MB · 356 KB savings available*
- **[WARNING]** Page weight 40.9 MB over 1MB target
- **[INFO]** ~356 KB of savings available
- **[WARNING]** 64 third-party resources (100% of weight)
- **[INFO]** 12 resources over 200KB
### Render-Blocking Resources (A+ — 100/100)
*No render-blocking resources detected*
- **[PASS]** No render-blocking resources detected in
### Third-Party Resources (A+ — 100/100)
*No third-party resources detected*
---
## Content Quality
### Links (C — 70/100)
*200 links checked, 194 healthy, 6 broken*
- **[CRITICAL]** 194 of 200 links are healthy
- **[WARNING]** Broken link: https://fonts.googleapis.com — Found in . Returns HTTP 404.
- **[WARNING]** Broken link: https://fonts.gstatic.com — Found in . Returns HTTP 404.
- **[CRITICAL]** Broken link: https://alumni.polimi.it/ — Found in . Get "https://alumni.polimi.it/": context deadline exceeded
- **[CRITICAL]** Broken link: https://www.intranet.polimi.it — Found in . Returns HTTP 500.
- **[CRITICAL]** Broken link: https://diversityandinclusion.polimi.it/ — Found in . Get "https://diversityandinclusion.polimi.it/": resolve diversityandinclusion.polimi.it: lookup diversityandinclusion.polimi.it on 1.1.1.1:53: no such host
- **[CRITICAL]** Broken link: https://www.mynewsdesk.com/it/politecnico-di-milano — Found in . Returns HTTP 404.
### Mixed Content (A+ — 100/100)
*No mixed content detected — all resources use HTTPS.*
- **[PASS]** No mixed content detected — all resources use HTTPS
### Open Graph (F — 45/100)
*Open Graph tags need attention — social sharing previews may be incomplete.*
- **[CRITICAL]** og:image is not reachable — The og:image URL could not be fetched. Social platforms won't be able to display it.
- **[WARNING]** Missing og:title — The og:title tag controls the title shown in social sharing previews.
- **[WARNING]** Missing og:description — The og:description tag controls the description in social sharing previews.
- **[INFO]** Missing og:url — The og:url tag specifies the canonical URL for the shared content.
- **[INFO]** Missing og:type — The og:type tag helps social platforms categorize the content.
- **[INFO]** Missing og:site_name — The og:site_name tag displays the website name in social previews.
### Structured Data (A+ — 100/100)
*2 JSON-LD block(s) found — structured data is well configured.*
- **[PASS]** 2 blocks of custom type "CollegeOrUniversity" — unable to validate specific properties
- **[PASS]** 2 JSON-LD blocks found
---
## Infrastructure
### DNS Records (A+ — 95/100)
*1 A records, 185 ms lookup*
- **[PASS]** Resolves to 1 IPv4 address(es)
- **[INFO]** Single A record — no DNS redundancy — Multiple A records provide failover if one server goes down.
- **[INFO]** No IPv6 (AAAA) records
- **[PASS]** 3 nameserver(s) configured
- **[PASS]** 1 mail exchanger(s) configured
- **[INFO]** CAA records not checked — CAA record lookup requires a specialized DNS resolver. This check will be available in a future update.
- **[PASS]** SPF record present in TXT
- **[PASS]** DNS resolution time: 185 ms
### Redirect Chain (B — 70/100)
*1 redirect(s), 1514 ms total*
- **[PASS]** Single redirect
- **[INFO]** WWW normalization redirect
- **[WARNING]** Redirect overhead: 1514 ms total
### IPv6 Readiness (C — 60/100)
*No IPv6 support*
- **[INFO]** No IPv6 (AAAA) records found — IPv6 support is increasingly important for global accessibility. About 40% of internet users have IPv6 connectivity.
### Crawlability (C — 65/100)
*robots.txt present, sitemap with 0 URLs*
- **[PASS]** robots.txt is present
- **[PASS]** sitemap.xml is present
- **[WARNING]** sitemap.xml contains invalid XML — Search engines may not be able to parse the sitemap. Fix XML validation errors.
- **[WARNING]** sitemap.xml is empty — no URLs found — An empty sitemap provides no value. Add entries for your pages.
- **[INFO]** robots.txt does not reference a sitemap — Add a 'Sitemap:' directive to robots.txt so search engines can discover your sitemap.
### URL Variants (B — 75/100)
*www/non-www, trailing slash, HTTP→HTTPS*
- **[CRITICAL]** Both www and non-www versions serve content
- **[PASS]** HTTP correctly 301-redirects to HTTPS
### Domain Intelligence (A+ — 100/100)
*polimi.it — via GARR-REG, 30 years, 8 months old, hosted on ASGARR Consortium GARR, IT*
- **[PASS]** Domain registered until Jan 29, 2027 (9 months remaining)
- **[PASS]** Registrar: GARR-REG
- **[WARNING]** Registrar lock is NOT enabled — The domain can be transferred without an unlock step. Enable registrar lock (clientTransferProhibited) in your registrar's control panel to protect against unauthorized or accidental transfers.
- **[PASS]** Hosting: ASGARR Consortium GARR, IT
---
## Compliance
### WCAG Compliance (A+ — 100/100)
*No testable criteria*
### Cookie Consent & Privacy (B — 80/100)
*No consent signals detected*
- **[WARNING]** No privacy policy link detected — A privacy policy page is recommended for transparency and may be legally required.
- **[INFO]** No terms of service link detected
- **[INFO]** No cookie consent banner detected
- **[INFO]** This is an automated check, not legal advice — BeaverCheck detects technical indicators of consent management. This does not constitute a legal compliance assessment. Consult a privacy professional for GDPR/CCPA compliance.
### Language & i18n (A — 90/100)
*Lang attribute present*
- **[PASS]** attribute is present
- **[PASS]** value is valid
- **[INFO]** No Content-Language HTTP header
- **[INFO]** Language signals are inconsistent — The attribute and Content-Language header should agree.
### Readability & Typography (A+ — 100/100)
*Font sizes and tap targets checked*
### Viewport Configuration (A+ — 100/100)
*Viewport properly configured*
- **[PASS]** Viewport meta tag is present
- **[PASS]** width=device-width is set
- **[PASS]** User zooming is allowed
### Third-Party Trackers (C — 55/100)
*4 trackers detected*
- **[INFO]** 4 third-party trackers detected — Found 3 analytics, 0 advertising, 0 marketing, 1 tag manager trackers.
- **[WARNING]** Trackers detected but no cookie policy found — This page loads 4 trackers but no cookie policy was detected. GDPR requires disclosure when using tracking cookies.
- **[WARNING]** Trackers detected but no privacy policy found — Most data protection regulations require a privacy policy when collecting user data via trackers.
### Cookie & Tracker Inventory (A+ — 100/100)
*0 cookies · 4 trackers · 0 pre-consent*
- **[INFO]** 4 third-party tracker(s) detected on page
---
## Legal
### Legal Page Ecosystem (F — 35/100)
*1 of 7 expected legal pages detected*
- **[PASS]** Privacy Policy detected — Found at https://www.polimi.it/il-politecnico/comunicazione/privacy, linked from footer.
- **[WARNING]** Terms of Service not detected — No link matching common Terms of Service URL patterns or link text was found. Most websites are expected to have a Terms of Service, especially those collecting user data.
- **[INFO]** Cookie Policy not detected — No link matching common Cookie Policy URL patterns or link text was found. Most websites are expected to have a Cookie Policy, especially those collecting user data.
- **[INFO]** Accessibility Statement not detected — No link matching common Accessibility Statement URL patterns or link text was found. Most websites are expected to have a Accessibility Statement, especially those collecting user data.
- **[INFO]** DMCA / Copyright Notice not detected — No link matching common DMCA / Copyright Notice URL patterns or link text was found. Most websites are expected to have a DMCA / Copyright Notice, especially those collecting user data.
- **[INFO]** Refund / Returns Policy not detected — No link matching common Refund / Returns Policy URL patterns or link text was found. Most websites are expected to have a Refund / Returns Policy, especially those collecting user data.
- **[INFO]** Acceptable Use Policy not detected — No link matching common Acceptable Use Policy URL patterns or link text was found. Most websites are expected to have a Acceptable Use Policy, especially those collecting user data.
### Copyright Notice (C — 55/100)
*No copyright notice detected*
- **[INFO]** No copyright notice detected — No copyright notice detected in the page content. While not legally required in most jurisdictions (copyright exists automatically), a notice is standard practice and signals site ownership.
### Regulatory Indicators
*2 regulatory indicator(s) detected*
- **[INFO]** This is a technical scan, not a legal assessment — BeaverCheck detects technical indicators that may suggest regulatory relevance. This is not a compliance audit and should not be relied upon for legal decisions. Consult qualified legal counsel for compliance assessments.
- **[INFO]** GDPR indicators detected (strong confidence) — Indicators suggesting GDPR may be relevant: European TLD detected: .it; Text mentions: gdpr; Privacy policy page found. EU General Data Protection Regulation — governs collection and processing of personal data of EU residents.
- **[INFO]** CCPA indicators detected (weak confidence) — Indicators suggesting CCPA may be relevant: Text mentions: ccpa. California Consumer Privacy Act — gives California residents rights over their personal data.
### Third-Party Data Sharing
*2 third-party service(s) detected*
- **[INFO]** Data inventory for transparency purposes — This inventory identifies third-party services that receive data from your site visitors. Under regulations like GDPR (Article 30), maintaining records of data processing activities is commonly considered a best practice. This automated scan provides a starting point — it may not capture all data flows.
- **[INFO]** 2 third-party services across 2 categories — 2 third-party services detected across 2 categories: Analytics (1), Tag Management (1). Each of these services receives some user data from your site visitors.
- **[INFO]** Google Analytics (Analytics) — Detected via script URL. Typically collects: Page views, User behavior, Demographics, Device info, IP address. Privacy policy: https://policies.google.com/privacy. Data Processing Agreement available.
- **[INFO]** Google Tag Manager (Tag Management) — Detected via script URL. Typically collects: Orchestrates other tracking scripts, Page views. Privacy policy: https://policies.google.com/privacy. Data Processing Agreement available.
### Compliance Badges (C — 55/100)
*0 compliance badge(s) detected*
- **[INFO]** No compliance badges detected — No recognized compliance certification badges or seals were found. This is common — many sites do not display compliance badges.
---
## Availability
### CDN & Delivery (D — 50/100)
*No CDN detected*
- **[WARNING]** No CDN detected — A CDN can significantly improve load times for users around the world by caching content at edge nodes closer to them.
### HTTP Caching (F — 30/100)
*No cache headers*
- **[WARNING]** No Cache-Control header found — Browsers will use heuristic caching, which can be unpredictable. Set explicit cache headers.
### Transport Security (B — 75/100)
*HTTP/3, HSTS, and TLS version analysis*
- **[INFO]** HTTP/3 (QUIC) not advertised — HTTP/3 eliminates head-of-line blocking. If your CDN supports it, consider enabling it.
- **[WARNING]** HSTS max-age is short: 180 days — HSTS max-age should be at least 1 year (31536000 seconds).
- **[PASS]** TLS 1.3 in use (fastest handshake, 1-RTT)
---
## Accessibility
### Landmark Structure (A+ — 100/100)
*20 landmarks*
- **[PASS]** landmark present
- **[PASS]** 1