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Security report for quarto.org

Posit · Technology · N/a

Medium risk. 7 critical or high findings in Security headers, GDPR outside view and 1 other check.

Security score

63/100

Risk levelMedium

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

Quarto.org is the official website for Quarto, an open source scientific and technical publishing system that supports multiple programming languages including Python, R, Julia, and JavaScript. The platform enables users to author and publish high-quality, reproducible documents such as articles, books, websites, and presentations in various formats. The website is professionally designed with excellent content quality, clear navigation, and strong branding consistency. It targets data scientists, researchers, and technical authors seeking advanced publishing tools integrated with popular data science languages. The business is backed by Posit, a reputable company in the data science ecosystem, indicating a solid market position and credibility. Technically, the website employs modern web technologies including Bootstrap for responsive design, Algolia for search functionality, and various JavaScript libraries for enhanced user experience. It integrates with platforms like Jupyter and RStudio, reflecting a mature and well-supported technical infrastructure. Performance and mobile optimization are excellent, and SEO practices are well implemented. Hosting and domain registration are stable and consistent with the business identity. From a security perspective, the site uses HTTPS with a good SSL configuration and domain-level protections such as clientDeleteProhibited status. However, DNSSEC is not enabled, and security headers are not visibly implemented, which could be improved. There is no explicit security policy or incident response information publicly available. Privacy compliance is basic, with a privacy policy present but no cookie consent mechanism detected. No contact emails or phone numbers are provided, limiting direct communication channels. Overall, Quarto.org presents a trustworthy, professional, and technically sound web presence for a specialized technical publishing product. Strategic improvements in privacy compliance, security headers, and incident response transparency would enhance trust and security posture further.

Scanned

NIS2 and GDPR posture

GDPR outside view
50/ 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

7 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 Privacy Policy found

      GDPR requires a clear and accessible privacy policy

      What to do: Add a comprehensive privacy policy page and link to it prominently

    • 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

      Third-party services without privacy policy

      Detected services: Google Analytics

      What to do: Document all third-party data sharing in your privacy policy

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

Keep watching quarto.org

This scan found 24 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

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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
52
Security headers
30
Email security
70
DNS health
75
Network security
100
GDPR outside view
50
Average
63

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

Quarto operates in the technology sector, focusing on scientific and technical publishing tools that integrate multiple programming languages. Its open source model combined with commercial support through Posit positions it well in a niche market. The platform appeals to data scientists, researchers, and technical authors, offering multi-format publishing capabilities and integration with popular data science environments. The company benefits from strong community engagement and corporate backing, with a clear growth trajectory in technical publishing. Partnerships with Posit and presence on GitHub reinforce its credibility and ecosystem integration. Revenue likely derives from commercial support and enterprise publishing solutions. The website content and structure reflect a mature product with a focused target audience and a clear value proposition.

Security posture

The website demonstrates a moderate to good security posture with mandatory HTTPS enabled and domain registration protections in place. However, the absence of DNSSEC and security headers such as Content-Security-Policy and Strict-Transport-Security represents areas for improvement. No forms or input fields reduce attack surface, and no exposed sensitive data or vulnerable libraries were detected. The lack of a public security policy or incident response contact limits transparency and preparedness communication. Privacy compliance is minimal, with no cookie consent mechanism observed. Overall, the security posture is adequate for an informational website but could be enhanced to meet higher compliance and security standards.

Recommendations

  1. Enable DNSSEC on the domain to strengthen DNS security and prevent spoofing.
  2. Implement standard security headers including Content-Security-Policy, X-Frame-Options, and Strict-Transport-Security to improve browser security.
  3. Add a clear security policy and incident response contact information on the website to improve transparency and readiness.
  4. Introduce a cookie consent banner or mechanism to comply with privacy regulations and improve user trust.
  5. Provide verified contact information such as support emails or phone numbers to facilitate communication and trust.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Posit
Description
An open source technical publishing system for creating beautiful articles, websites, blogs, books, slides, and more. Supports Python, R, Julia, and JavaScript.
Key services
Technical publishing system, Multi-language document authoring, Publishing to multiple formats and platforms
Content quality
excellent
Branding
consistent

Technology

Stack
HTML5, CSS3, JavaScript, Bootstrap, Algolia Search, ClipboardJS, AnchorJS, Popper.js, Tippy.js, Jupyter, Julia, Observable JS
Frameworks
Bootstrap
Platforms
Jupyter, RStudio, VS Code
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
80/100
Good practices seen
  • HTTPS enabled
  • Domain status includes clientDeleteProhibited and other EPP protections
  • No exposed sensitive data in HTML

Analytics and tracking

Services
Google Analytics, Algolia Analytics
Tracking level
moderate
Privacy practices
basic

Advertising

Tracking pixels
Google Analytics (gtag.js), Algolia Analytics
Marketing tools
Algolia Search
Transparency
basic

Site quality

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

Key observations

  1. Website is fully accessible with rich content and interactive features.
  2. Strong technical publishing focus with multi-language support.
  3. No contact emails or phone numbers explicitly listed on the homepage or footer.
  4. No explicit privacy or cookie consent banners detected.
  5. Use of modern JavaScript libraries and frameworks for UI and search.
  6. No visible security.txt or vulnerability disclosure policy.
  7. No forms detected on the homepage or main content.
  8. Social media presence includes GitHub and Bluesky links.
  9. Supported by Posit, indicating corporate backing and trust.
Technical notes

Notes

The website is built using modern web standards with HTML5, CSS3, and JavaScript frameworks including Bootstrap for responsive design and Algolia for search functionality. It integrates with multiple programming languages and platforms such as Jupyter, RStudio, and Julia, reflecting a sophisticated technical publishing ecosystem. Performance is optimized with asynchronous script loading and CDN usage. Accessibility features and SEO optimizations are well implemented. The domain is registered with GoDaddy and DNS is managed by NS1, indicating reliable infrastructure. No CMS is detected, suggesting a custom or static site generation approach. Overall, the technical implementation is robust, modern, and well-suited to the target audience and business goals.
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

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