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Security report for builder.io

Builder.io · Technology · N/a

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

Security score

76/100

Risk levelLow

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

Builder.io is a technology company offering an AI-powered visual development platform designed to accelerate web and mobile experience creation. The platform targets development teams seeking to streamline content generation and optimization, positioning itself as an innovative SaaS solution in the visual development market. The website demonstrates a modern technical infrastructure leveraging React, Next.js, and advanced CSS-in-JS styling, indicating a mature digital presence. Security posture is strong with HTTPS enforcement and multiple security headers, though the absence of explicit privacy and terms of service pages suggests room for compliance improvement. Overall, the site is professional, well-branded, and trustworthy, with moderate user tracking and cookie consent mechanisms in place.

Scanned

This is an earlier scan of builder.io. View the latest report

NIS2 and GDPR posture

GDPR outside view
73/ 100 · Medium
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 Strict-Transport-Security header

      Forces HTTPS connections

      What to do: Add "Strict-Transport-Security: max-age=31536000; includeSubDomains; preload"

      • CWE-319
      • OWASP A04:2025
      • ASVS V3.4.1
    • 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 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 builder.io

This scan found 17 issues across 6 checks. Monitoring re-runs those checks daily, emails you when something material changes and records each fix, so you can show progress.

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Recommended

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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
100
Security headers
15
Email security
87
DNS health
80
Network security
100
GDPR outside view
73
Average
76

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

Builder.io operates in the technology sector, focusing on SaaS delivery of visual development tools enhanced by AI capabilities. Its business model revolves around providing a platform that reduces development cycles from sprints to seconds, appealing to web and mobile development teams. The company maintains a consistent brand presence and leverages social media for outreach. While WHOIS data is unavailable, the website's professionalism and technology stack support a medium-sized enterprise profile. The lack of direct contact details and formal policy pages may impact user trust and regulatory compliance. No suspicious domains or partners were identified, indicating a focused and controlled ecosystem.

Security posture

The website exhibits a solid security foundation with HTTPS, security headers, and cookie consent implementation. However, the absence of a published privacy policy, terms of service, and vulnerability disclosure mechanisms limits transparency and incident response readiness. No vulnerabilities or exposed sensitive data were detected in the analyzed content. The security score is high but could be improved by adding formal policies and contact channels for security incidents. Compliance with GDPR and other data protection regulations is unclear due to missing documentation. Overall, the security culture appears proactive but incomplete.

Recommendations

  1. Publish a comprehensive privacy policy page to enhance transparency and compliance.
  2. Add a terms of service page to clarify user agreements and legal protections.
  3. Provide clear contact information, including security incident contacts.
  4. Implement a vulnerability disclosure policy or security.txt file to facilitate responsible reporting.
  5. Enhance accessibility features to improve inclusivity and compliance with standards.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Builder.io
Description
Builder is an AI-Powered Visual Development Platform that helps teams generate, iterate, and optimize web and mobile experiences in seconds instead of sprints.
Key services
Visual development platform, AI-powered content generation, Web and mobile experience optimization
Content quality
excellent
Branding
consistent

Technology

Stack
React, Next.js, Emotion CSS-in-JS, Google Tag Manager, ZoomInfo Pixel, Cookielaw.org Consent Management
Frameworks
Next.js
Platforms
Web
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Security headers present
  • Cookie consent mechanism implemented

Analytics and tracking

Services
Google Tag Manager
Tracking level
moderate
Privacy practices
basic

Advertising

Tracking pixels
ZoomInfo
Transparency
basic

Site quality

Design
excellent
User experience
excellent
Content relevance
excellent
Navigation
excellent
Professionalism
excellent
Trustworthiness
high

Key observations

  1. Website uses modern web technologies and frameworks.
  2. Content is rich and professionally presented.
  3. No direct contact emails or phone numbers found on the homepage.
  4. Cookie consent mechanism is implemented indicating privacy awareness.
  5. WHOIS data is unavailable, likely due to privacy protection or query failure.
  6. No security.txt or vulnerability disclosure information found.
  7. No explicit privacy policy or terms of service pages detected in the provided content.
  8. Social media presence confirmed via Twitter handle in metadata.
  9. No adult or questionable content detected.
Technical notes

Notes

Builder.io's website is built on a modern tech stack including React and Next.js, with CSS-in-JS styling via Emotion. The site loads scripts asynchronously, uses Google Tag Manager for analytics, and integrates cookie consent management. Performance is moderate with good mobile optimization and SEO metadata present. The absence of detected CMS suggests a custom or proprietary platform. Hosting provider details are not explicit. Technical debt appears low, but improvements in accessibility and formal policy documentation are recommended to reduce operational risks.
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. 73/100Medium26 findingsView report
  2. 73/100 +5Medium27 findingsView report
  3. 68/100Medium27 findingsView report
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