# BeaverCheck Audit Report — https://interestingengineering.com **Date:** April 21, 2026 **URL:** https://interestingengineering.com **Overall Grade:** C (76/100) **Report:** https://beavercheck.com/results/423d8c12-59b0-48f3-bd97-d34356a2780c ## Top Findings 1. **[CRITICAL]** Content-Security-Policy header is missing — Security > Security Headers 2. **[CRITICAL]** HSTS header is missing — Security > Security Headers 3. **[CRITICAL]** No Content-Security-Policy header found — Security > Content Security Policy 4. **[CRITICAL]** Page weighs 26.1 MB (18.7 MB transferred) — Performance > Page Weight Budget 5. **[CRITICAL]** 1 control(s) without accessible label — Accessibility > Form Accessibility --- ## Lighthouse Scores | Category | Score | |----------|-------| | Performance | 27 | | Accessibility | 95 | | Best Practices | 69 | | SEO | 100 | --- ## Security ### Security Headers (F — 5/100) *1 of 10 headers properly configured* - **[CRITICAL]** HSTS header is missing — Strict-Transport-Security forces browsers to use HTTPS, preventing downgrade attacks. Add the header with a max-age of at least 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. - **[WARNING]** X-Powered-By header reveals technology stack — This header discloses server technology (e.g. Express, PHP), helping attackers target known vulnerabilities. Remove it. - **[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 84 days) - **[PASS]** Certificate chain has 2 certificates - **[PASS]** Certificate uses modern signature algorithm - **[PASS]** Certificate covers 2 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 (D — 40/100) *1 of 31 external resources have SRI* - **[WARNING]** External script from ads.adthrive.com lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code. - **[WARNING]** External script from ads.adthrive.com lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code. - **[WARNING]** External script from ads.adthrive.com lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code. - **[WARNING]** External script from securepubads.g.doubleclick.net lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code. - **[WARNING]** External script from c.aps.amazon-adsystem.com lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code. - **[WARNING]** External script from capi-automation.s3.us-east-2.amazonaws.com lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code. - **[WARNING]** External script from scripts.clarity.ms lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code. - **[WARNING]** External script from js.hscollectedforms.net lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code. - **[WARNING]** External script from js.hs-analytics.net lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code. - **[WARNING]** External script from js.hs-banner.com lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code. - **[WARNING]** External script from connect.facebook.net lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code. - **[WARNING]** External script from connect.facebook.net lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code. - **[WARNING]** External script from connect.facebook.net 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 cdn.parsely.com lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code. - **[WARNING]** External script from connect.facebook.net lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code. - **[WARNING]** External script from snap.licdn.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 www.googletagmanager.com lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code. - **[WARNING]** External script from www.clarity.ms 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 experiments.parsely.com lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code. - **[WARNING]** External script from securepubads.g.doubleclick.net lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code. - **[PASS]** script from static.cloudflareinsights.com has SRI protection - **[WARNING]** External script from cdn.p-n.io lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code. - **[WARNING]** External script from js.hs-scripts.com lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code. - **[WARNING]** External script from ads.adthrive.com lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code. - **[WARNING]** External script from b.delivery.consentmanager.net lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code. - **[WARNING]** External script from cdn.consentmanager.net lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code. - **[WARNING]** External script from cdn.consentmanager.net lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code. ### JS Library Vulnerabilities (A+ — 100/100) *No known vulnerabilities* - **[PASS]** No known JavaScript library vulnerabilities detected ### Information Leakage (A+ — 100/100) *No exposures* - **[INFO]** No security.txt found — Consider adding a security.txt at /.well-known/security.txt. - **[PASS]** No sensitive files exposed ### Email Security (A+ — 100/100) *DMARC: reject* - **[PASS]** DMARC policy is reject — strongest 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) *18.7 MB transferred, 197 requests* - **[CRITICAL]** Page weighs 26.1 MB (18.7 MB transferred) - **[WARNING]** Images are 15.8 MB — compress or use modern formats — Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size. - **[WARNING]** JavaScript is 2.5 MB — consider code splitting or lazy loading — Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts. - **[WARNING]** 197 HTTP requests — consider bundling or reducing — Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests. - **[INFO]** Estimated 3.9 g CO2 per page load ### Third-Party Impact (A+ — 100/100) *15% third-party, 0 ms blocking* - **[INFO]** Third-party code accounts for 15% of page weight (2.9 MiB of 18.7 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 (B — 75/100) *61 images, 0 KB saveable* - **[PASS]** All images are well-optimized ### JS Execution Cost (F — 20/100) *20090ms total JS execution* - **[WARNING]** Unattributable: 3184ms CPU time - **[WARNING]** https://interestingengineering.com/_next/static/ch...: 3031ms CPU time - **[WARNING]** https://interestingengineering.com/: 2065ms CPU time - **[WARNING]** https://cdn.consentmanager.net/delivery/customdata...: 1396ms CPU time - **[WARNING]** https://ads.adthrive.com/builds/core/ef1e10d/es201...: 1294ms CPU time - **[WARNING]** Third-party scripts: 14094ms (70% of total) ### Font Loading (A+ — 100/100) *7 fonts (180 KB)* - **[INFO]** 7 font(s) use font-display: swap (FOUT risk but functional) ### JS Bundles (F — 20/100) *58 scripts, 789 KB unused* - **[WARNING]** https://ads.adthrive.com/builds/core/ef1e10d/es201...: 160 KB unused (44%) — Consider code splitting or tree shaking to reduce unused code. - **[WARNING]** https://securepubads.g.doubleclick.net/pagead/mana...: 131 KB unused (70%) — Consider code splitting or tree shaking to reduce unused code. - **[WARNING]** https://ads.adthrive.com/builds/core/ef1e10d/gdpr/...: 126 KB unused (72%) — Consider code splitting or tree shaking to reduce unused code. - **[WARNING]** https://www.googletagmanager.com/gtag/js?id=G-0Y8R...: 69 KB unused (40%) — Consider code splitting or tree shaking to reduce unused code. - **[WARNING]** https://www.googletagmanager.com/gtag/js?id=G-7BEH...: 65 KB unused (37%) — Consider code splitting or tree shaking to reduce unused code. - **[INFO]** Total unused JavaScript: 789 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) *38 hints, 0 missing preconnects* - **[PASS]** Page uses 38 resource hint(s) ### Page Weight Inventory (D — 45/100) *197 resources · 18.7 MB · 789 KB savings available* - **[WARNING]** Page weight 17.7 MB over 1MB target - **[INFO]** ~789 KB of savings available - **[INFO]** 85 third-party resources (15% of weight) - **[INFO]** 17 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 (B — 80/100) *200 links checked, 196 healthy, 4 broken* - **[CRITICAL]** 196 of 200 links are healthy - **[WARNING]** Broken link: https://d2kspx2x29brck.cloudfront.net — Found in . Get "https://d2kspx2x29brck.cloudfront.net": resolve d2kspx2x29brck.cloudfront.net: lookup d2kspx2x29brck.cloudfront.net on 1.1.1.1:53: no such host - **[WARNING]** Broken link: https://dcne4c3fn1bk2.cloudfront.net — Found in . Get "https://dcne4c3fn1bk2.cloudfront.net": resolve dcne4c3fn1bk2.cloudfront.net: lookup dcne4c3fn1bk2.cloudfront.net on 1.1.1.1:53: no such host - **[WARNING]** Broken link: https://dnd2oi6izkvoi.cloudfront.net — Found in . Get "https://dnd2oi6izkvoi.cloudfront.net": resolve dnd2oi6izkvoi.cloudfront.net: lookup dnd2oi6izkvoi.cloudfront.net on 1.1.1.1:53: no such host - **[CRITICAL]** Broken link: https://www.youtube.com/@Interestingengineeringofficial — 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 (A — 90/100) *Open Graph tags are well configured for social sharing.* - **[CRITICAL]** og:image is not reachable — The og:image URL could not be fetched. Social platforms won't be able to display it. ### Structured Data (A+ — 100/100) *1 JSON-LD block(s) found — structured data is well configured.* - **[PASS]** Custom type "CollectionPage" — unable to validate specific properties --- ## Infrastructure ### DNS Records (A+ — 100/100) *2 A records, 8 ms lookup* - **[PASS]** Resolves to 2 IPv4 address(es) - **[PASS]** Has 2 IPv6 (AAAA) record(s) - **[PASS]** 2 nameserver(s) configured - **[PASS]** 5 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: 8 ms ### Redirect Chain (A+ — 100/100) *No redirects — direct access* - **[PASS]** No redirects — direct access ### IPv6 Readiness (A+ — 100/100) *IPv6 reachable (1 ms)* - **[PASS]** IPv6 is configured and reachable at 2606:4700:10::6814:1989, 2606:4700:10::ac42:9b0b ### Crawlability (A+ — 100/100) *robots.txt present, sitemap with 73 URLs* - **[PASS]** robots.txt is present - **[PASS]** sitemap.xml is present - **[PASS]** sitemap.xml is valid XML - **[PASS]** sitemap.xml contains 73 entries - **[PASS]** Sitemap index with 73 child sitemaps - **[PASS]** robots.txt references sitemap ### URL Variants (A+ — 100/100) *www/non-www, trailing slash, HTTP→HTTPS* - **[PASS]** www/non-www redirect configured correctly (preferred: non-www) - **[PASS]** HTTP correctly 301-redirects to HTTPS ### Domain Intelligence (A+ — 100/100) *interestingengineering.com — via GoDaddy.com, LLC, 14 years, 8 months old* - **[PASS]** Domain registered until Nov 4, 2033 (7 years, 7 months remaining) - **[INFO]** DNSSEC is not enabled — DNSSEC protects against DNS spoofing attacks. While not required, enabling DNSSEC adds an additional layer of security. Contact your DNS provider to enable it. - **[PASS]** Registrar: GoDaddy.com, LLC - **[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. --- ## 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 (F — 30/100) *18 trackers detected* - **[INFO]** 18 third-party trackers detected — Found 10 analytics, 6 advertising, 1 marketing, 1 tag manager trackers. - **[WARNING]** 6 advertising/retargeting trackers detected — Advertising trackers collect user data for ad targeting. Under GDPR, these typically require explicit consent. - **[WARNING]** Trackers detected but no cookie policy found — This page loads 18 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. - **[WARNING]** Session replay tool detected: Microsoft Clarity — Session replay tools record user interactions. These require clear disclosure and often explicit consent under GDPR. ### Cookie & Tracker Inventory (A+ — 100/100) *0 cookies · 18 trackers · 0 pre-consent* - **[INFO]** 18 third-party tracker(s) detected on page --- ## Legal ### Legal Page Ecosystem (C — 60/100) *2 of 7 expected legal pages detected* - **[PASS]** Privacy Policy detected — Found at /policies, linked from footer. - **[PASS]** Terms of Service detected — Found at /tos. - **[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 (B — 80/100) *Copyright 2025 | IE Media* - **[INFO]** Copyright year is 2025 (1 year(s) behind) — Copyright year is 2025 — 1 year(s) behind. While copyright protection doesn't depend on the year being current, an outdated notice may suggest the site is not actively maintained. Update to © 2026 or use a range like © 2025–2026. - **[PASS]** Copyright holder: | IE Media ### 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 (moderate confidence) — Indicators suggesting GDPR may be relevant: Privacy policy page found. EU General Data Protection Regulation — governs collection and processing of personal data of EU residents. - **[INFO]** CCPA indicators detected (strong confidence) — Indicators suggesting CCPA may be relevant: Text mentions: do not sell; Link text: Do Not Sell My Personal Information. California Consumer Privacy Act — gives California residents rights over their personal data. ### Third-Party Data Sharing *5 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]** 5 third-party services across 4 categories — 5 third-party services detected across 4 categories: Analytics (1), Tag Management (1), Advertising (2), Marketing (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. - **[INFO]** Facebook Pixel (Advertising) — Detected via script URL. Typically collects: Page views, Conversions, User behavior, Ad targeting. Privacy policy: https://www.facebook.com/privacy/policy. Data Processing Agreement available. - **[INFO]** HubSpot (Marketing) — Detected via script URL. Typically collects: Lead tracking, Form submissions, Page views, Email tracking. Privacy policy: https://legal.hubspot.com/privacy-policy. Data Processing Agreement available. - **[INFO]** LinkedIn Insight (Advertising) — Detected via script URL. Typically collects: Page views, Conversions, Ad targeting, Professional demographics. Privacy policy: https://www.linkedin.com/legal/privacy-policy. 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 (A — 85/100) *Cloudflare (DYNAMIC)* - **[PASS]** Site is served via Cloudflare CDN (edge: AMS) - **[INFO]** CDN cache status: DYNAMIC ### HTTP Caching (A — 90/100) *max-age=300 (5 minutes)* - **[PASS]** Cache-Control header is set - **[PASS]** Effective TTL: 5 minutes (max-age=300) - **[INFO]** No ETag or Last-Modified header — Conditional requests (304 Not Modified) are not possible without validators. ### Transport Security (A — 85/100) *HTTP/3, HSTS, and TLS version analysis* - **[PASS]** HTTP/3 (QUIC) supported — The server advertises HTTP/3 via Alt-Svc for faster connections on mobile networks. - **[WARNING]** Missing Strict-Transport-Security header — HSTS tells browsers to only use HTTPS, preventing SSL stripping attacks. - **[PASS]** TLS 1.3 in use (fastest handshake, 1-RTT) --- ## Accessibility ### Landmark Structure (A — 90/100) *27 landmarks* - **[PASS]**
landmark present - **[PASS]** 8