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Security report for dart.dev

Google · Technology · United States

Low risk. 4 critical or high findings in Security headers, Email security and 2 other checks.

Security score

78/100

Risk levelLow

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

Dart.dev is the official website for the Dart programming language, a modern, open-source language developed and supported by Google. The site serves as a comprehensive resource hub for developers, offering extensive documentation, tutorials, tools, and an online code editor (DartPad). Positioned strongly in the technology sector, Dart is targeted at developers building high-quality, cross-platform applications, with a focus on productivity and performance. The website reflects a mature digital presence with consistent branding and professional design. Technically, the site employs modern web technologies including JavaScript, CSS, and HTML5, with integrations of Google Tag Manager and Google Analytics for performance and user behavior tracking. The site is hosted on Google infrastructure, ensuring fast loading times and excellent mobile optimization. Accessibility and SEO practices are well implemented, contributing to a positive user experience. From a security perspective, the site enforces HTTPS and includes a cookie consent mechanism aligned with GDPR requirements. While explicit security headers are not visible in the provided data, the site follows best practices by avoiding exposure of sensitive data and using trusted external scripts. However, the absence of a public incident response or vulnerability disclosure page suggests room for improvement in transparency and security communication. Overall, dart.dev demonstrates a high level of professionalism, trustworthiness, and compliance with privacy standards. The domain registration details align with Google LLC, reinforcing legitimacy. The site is free from blocking mechanisms or WAF challenges, allowing full content accessibility. Strategic recommendations include enhancing security header implementation, publishing vulnerability disclosure information, and providing clearer contact channels for security incidents.

Scanned

This is an earlier scan of dart.dev. View the latest report

NIS2 and GDPR posture

GDPR outside view
83/ 100 · Low
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 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. Email security

    SPF, DKIM and DMARC stop others sending email that looks like it comes from your domain, a common route to phishing and invoice fraud.

    • High

      No SPF record found

      SPF helps prevent email spoofing

      What to do: Add SPF record: "v=spf1 include:_spf.yourmailprovider.com ~all"

  3. SSL/TLS

    TLS encrypts the connection and proves the site is really yours. Weak or expiring certificates trigger browser warnings and put traffic at risk.

    • High

      Weak Protocols Supported

      Server supports weak protocols: TLSv1.1

      What to do: Disable TLS 1.0, TLS 1.1, and all SSL versions

      • CWE-327
      • OWASP A04:2025
      • ASVS V12.1.1

  4. DNS health

    DNS sends visitors and email to the right servers. Misconfigured records can cause outages or let someone redirect your traffic.

    • High

      No Name Servers Found

      Unable to find name servers for domain

      What to do: Configure proper name servers for the domain

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

Keep watching dart.dev

This scan found 14 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.

Daily monitoring

Recommended

€25per month

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

Email alerts on material changes and an exportable JSON history of every change.

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Full report

€39.90one-time

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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
77
Security headers
70
Email security
65
DNS health
70
Network security
100
GDPR outside view
83
Average
78

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

Dart.dev operates as a key digital asset for Google’s Dart programming language, serving a global developer audience. The business model centers on open-source language promotion, community engagement, and ecosystem development, leveraging Google’s brand and resources. The site supports developer productivity through comprehensive documentation, tooling, and integration with related platforms such as Flutter and pub.dev. Market positioning is strong due to Google backing and the growing demand for cross-platform development solutions. The partnership ecosystem includes Flutter and DartPad, enhancing the language’s adoption. Growth indicators include active content updates, tutorials, and community resources. Revenue streams are indirect, primarily through Google’s broader developer platform strategy. The site lacks direct sales or contact information, focusing instead on resource provision and community building.

Security posture

The security posture of dart.dev is solid, with mandatory HTTPS and cookie consent mechanisms in place, reflecting compliance with GDPR and privacy best practices. The use of Google-managed analytics and tag management services ensures reliable data collection with privacy considerations. No exposed sensitive data or vulnerable libraries were detected in the HTML content. However, the absence of explicit security headers such as Content-Security-Policy or Strict-Transport-Security in the provided data suggests potential enhancement areas. The site does not publicly disclose incident response or vulnerability reporting channels, which could improve transparency and trust. Overall, the security maturity is good but could benefit from formalized security communication and header policies.

Recommendations

  1. Implement and explicitly publish security headers including Content-Security-Policy, X-Frame-Options, and Strict-Transport-Security.
  2. Create and maintain a public vulnerability disclosure policy and security.txt file to facilitate responsible reporting.
  3. Enhance incident response transparency by providing clear contact channels for security issues.
  4. Regularly audit third-party scripts and dependencies to ensure no vulnerable libraries are included.
  5. Maintain and update privacy and cookie policies to reflect evolving regulations and best practices.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Google
Description
Dart is an approachable, portable, and productive language for high-quality apps on any platform.
Key services
Programming language specification and tools, Documentation and tutorials, Online code editor (DartPad), Package management and publishing guidance
Content quality
excellent
Branding
consistent

Technology

Stack
JavaScript, CSS, HTML5, Google Tag Manager, Google Analytics, Lite YouTube embed
Platforms
Web
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Cookie consent banner implemented
  • No exposed sensitive data in HTML
  • Use of secure external scripts from trusted domains

Analytics and tracking

Services
Google Analytics, Google Tag Manager
Tracking level
moderate
Privacy practices
good

Advertising

Transparency
good

Site quality

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

Key observations

  1. Website is fully accessible with no blocking or WAF challenges.
  2. Strong branding and consistent messaging aligned with Google and Dart programming language.
  3. Comprehensive documentation and resources for developers.
  4. Use of modern web technologies and performance optimizations.
  5. Good privacy and cookie policies linked to Google's official policy pages.
  6. No direct contact emails or phone numbers found on the site.
  7. Security policies are present but could be enhanced with explicit headers and incident response details.
Technical notes

Notes

The website is built using modern web standards with a custom static site generator (Eleventy) and leverages Google Fonts and CDN services for performance optimization. Integration with Google Tag Manager and Google Analytics indicates a mature approach to user analytics and marketing insights. The site is mobile-optimized with responsive design and accessibility features. Performance is fast, with no broken elements detected. The technical stack is well maintained, with opportunities to enhance security headers and incident response mechanisms. Hosting on Google infrastructure provides reliability and scalability. Overall, the technical implementation supports a high-quality user experience and aligns with industry best practices.
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. 78/100Low22 findingsView report
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