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Security report for polyfill-fastly.io

DNStination Inc. · Technology · United States

Medium risk. 4 critical or high findings in Security headers and GDPR outside view.

Security score

69/100

Risk levelMedium

0–100, higher is better. How it is calculated

The website 'Fastly Polyfill' is a technology-focused service offering customized JavaScript polyfill bundles tailored to the requesting browser's needs. It targets web developers seeking to improve browser compatibility and performance by delivering only necessary polyfills. The business is relatively new, founded in 2024, and operates under DNStination Inc., a US-based organization. The site is professionally designed with good content quality and clear navigation, though it lacks direct contact information and detailed privacy or security policies on the site itself. Technically, the site uses modern web standards including HTML5, CSS3 with Pico CSS framework, and JavaScript. It is hosted on Fastly's CDN infrastructure, ensuring moderate performance and good mobile optimization. However, the SSL/TLS configuration is incomplete or missing, with no valid certificate or enabled TLS protocols, which is a significant security concern. The site does implement HSTS with preload, but without HTTPS, this is ineffective. From a security perspective, the absence of a valid SSL certificate and lack of modern TLS support are critical vulnerabilities that expose users to potential interception and downgrade attacks. No other security headers or incident response contacts are published. Privacy compliance is basic, with links to Fastly's corporate privacy and terms pages but no cookie consent mechanism or GDPR-specific disclosures. Overall, the website is functional and credible for its niche but requires urgent improvements in security infrastructure, particularly SSL/TLS deployment, and enhanced privacy and contact transparency to improve trust and compliance.

Scanned

This is an earlier scan of polyfill-fastly.io. View the latest report

NIS2 and GDPR posture

GDPR outside view
43/ 100 · High
Checks completed
7of 7

NIS2 Art. 21(2)

  1. (a) Risk analysis and security policies: Not visible from outside
  2. (b) Incident handling: One indicator
  3. (c) Business continuity, backups and crisis management: Not visible from outside
  4. (d) Supply chain security: Not visible from outside
  5. (e) Secure acquisition, development and maintenance, including vulnerability handling: Partly checked
  6. (f) Assessing the effectiveness of security measures: Not visible from outside
  7. (g) Cyber hygiene and security training: Not visible from outside
  8. (h) Cryptography and encryption: Partly checked
  9. (i) HR security, access control and asset management: One indicator
  10. (j) Multi-factor authentication and secured communications: Not visible from outside

This scan rated NIS2 with an earlier keyword method that is no longer shown; rescan for the per-article view. Risk management, continuity, supply chain, training, MFA, management oversight (Art. 20) and incident reporting (Art. 23) need internal evidence, and Guard cannot tell whether NIS2 applies to this organisation.

GDPR is indicative only, based on publicly visible signals: Articles 7, 12, 13 and 32 of Regulation (EU) 2016/679 and Article 5(3) of the ePrivacy Directive. Not a certification or legal assessment.

Priority findings

4 findings rated critical or high. Fix these first.

  1. Security headers

    Security headers are instructions your web server sends to every visitor’s browser. Missing ones leave visitors more exposed to attacks such as clickjacking and injected scripts.

    • High

      Missing X-Frame-Options header

      Prevents clickjacking attacks

      What to do: Add "X-Frame-Options: DENY" or "X-Frame-Options: SAMEORIGIN"

    • High

      Missing Content-Security-Policy header

      Controls resources the browser is allowed to load

      What to do: Implement a Content-Security-Policy appropriate for your application

      • ASVS V3.4.3
      • OWASP Secure Headers: OWASP Secure Headers Project recommends Content-Security-Policy: default-src 'self'; form-action 'self'; base-uri 'self'; object-src 'none';…

  2. GDPR outside view

    These are the privacy signals visitors and data protection authorities look for under GDPR.

    • High

      No Cookie Policy found

      GDPR requires clear information about cookie usage

      What to do: Add a dedicated cookie policy explaining cookie usage and purposes

    • High

      No Cookie Consent Banner found

      GDPR requires explicit consent for non-essential cookies

      What to do: Implement a cookie consent banner that appears on first visit

Need hands-on remediation? Email guard@offseq.com

Keep watching polyfill-fastly.io

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  • TLS certificates and expiry
  • DNS records
  • SPF, DKIM and DMARC
  • Security headers
  • GDPR and NIS2 posture
  • Exposed services
  • Third-party trackers
  • Security score drift

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Results by check

Each check with its score, findings and the evidence it collected.

How this score is calculated

The security score runs 0–100, higher is better. It is the plain average of the security checks that completed in this scan, each counted equally. A check that could not run is left out: it counts neither as a pass nor as a fail.

Counted in this score

SSL/TLS
97
Security headers
50
Email security
50
DNS health
75
Network security
100
GDPR outside view
43
Average
69

Not counted

  • NIS2 outside view: Re-weights evidence from the TLS, email, DNS, network and hygiene checks, so counting it would count that evidence twice. Shown on its own.
  • OffSeq Observations: An AI reading of the site, useful context but not reproducible evidence. Shown on its own.

Findings that cap the score at 49

Each of these is serious on its own, so while any is present the site cannot rate better than high risk, however good the other checks are.

  • The certificate is not trusted by browsers
  • The website is not served over HTTPS
  • A database, remote desktop, file-sharing or Telnet service is reachable from the internet
  • The page loads a script from a compromised source
  • The domain registration has expired
  • SPF authorises every server to send mail as the domain

Partial scans

When the site blocks Guard or most checks cannot run, the score covers only the checks that ran (usually DNS and email), is capped at 75 and is shown as partial, without a risk level.

Risk levels

  • Critical0–25
  • High26–49
  • Medium50–75
  • Low76–100

Technical appendix

Business context, site observations and technical notes gathered during the scan, and the standards behind each reference.

Business context

Business profile

Fastly Polyfill operates in the technology sector, providing a specialized service that enhances web compatibility by delivering tailored polyfill bundles. Its business model revolves around serving web developers and technology users who require efficient browser feature support. The company leverages Fastly's CDN for hosting, indicating a partnership or service relationship with a major CDN provider. The market positioning is niche but important for web performance optimization. The presence of a GitHub repository suggests an open or community-driven aspect to the service. The company is small and newly founded, indicating a startup or new product launch phase. No direct sales or contact channels are visible, which may limit direct customer engagement but aligns with a developer-focused tool. The lack of direct contact info and security policies on the site suggests a focus on technical users who may rely on Fastly's broader corporate policies. The service likely generates revenue indirectly through Fastly's platform or as part of a larger suite of developer tools. Strategic partnerships with Fastly and open source community engagement are key strengths.

Security posture

The current security posture of the website is weak due to the absence of a valid SSL certificate and lack of enabled TLS protocols, which are fundamental for secure web communication. Although HSTS is enabled with preload, it cannot function properly without HTTPS. No OCSP stapling or session resumption mechanisms are implemented, reducing security and performance. The site does not expose sensitive data or show signs of vulnerable libraries, but the lack of HTTPS is a critical vulnerability. No published security policies, incident response contacts, or vulnerability disclosure programs are found, indicating limited transparency and preparedness for security incidents. Privacy compliance is minimal, with no cookie consent or GDPR-specific disclosures. Overall, the site requires immediate remediation of SSL/TLS issues and enhancement of security headers and policies to meet industry best practices.

Recommendations

  1. Obtain and deploy a valid SSL/TLS certificate to enable HTTPS across the site.
  2. Enable modern TLS protocols (TLS 1.2 and TLS 1.3) and disable insecure protocols.
  3. Implement OCSP stapling and session resumption to improve security and performance.
  4. Publish clear security policies and incident response contact information on the website.
  5. Add a cookie policy and consent mechanism to comply with privacy regulations.
Technical notes

Notes

The website is built with modern web technologies including HTML5, CSS3 using the Pico CSS framework, and JavaScript. It is hosted on Fastly's CDN infrastructure, which supports global content delivery and performance optimization. The site has moderate load times and good mobile responsiveness. However, the lack of a valid SSL certificate and disabled TLS protocols represent significant technical debt and security risk. The site does not use a CMS or major JavaScript frameworks beyond custom scripts. SEO is basic with meta description present but no Open Graph or JSON-LD structured data detected. Accessibility features appear to be implemented at a good level based on semantic HTML and ARIA attributes. Overall, the technical infrastructure is solid but requires urgent security upgrades and SEO enhancements.
Standards and sources

Reference chips under each finding point to the standard, regulation or specification the finding relates to. They are taken from the official datasets below and mapped conservatively: a finding with no defensible link shows none. NIS2 and GDPR references mark where a finding is relevant evidence, not a compliance verdict. Implementing Regulation (EU) 2024/2690 binds digital infrastructure and digital service providers; for other entities it is the most detailed public reading of the Article 21 measures. WCAG, EN 301 549, European Accessibility Act and Web Accessibility Directive references name the requirement an automated accessibility rule relates to; they are not a conformance verdict.

Retrieved 2026-10-25

Earlier scans of this domain

  1. 71/100Medium29 findingsView report
  2. 71/100Medium29 findingsView report
  3. 71/100Medium29 findingsView report
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