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Security report for haskell.org

Haskell.org, Inc. · Technology · N/a

Medium risk. 8 critical or high findings in Security headers, GDPR outside view and 1 other check.

Security score

51/100

Risk levelMedium

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

Haskell.org is the official home page for the Haskell programming language, a purely functional, statically typed language widely used in academia and industry. The site serves as a comprehensive resource hub offering documentation, downloads, community engagement, and educational tools such as an interactive playground. It is maintained by Haskell.org, Inc., a non-profit organization, and supported by reputable sponsors and partners including Fastly, Status.io, Scarf, DreamHost, and Digital Ocean. The website targets developers and programmers interested in functional programming paradigms and aims to promote the adoption and understanding of Haskell. Technically, the website is well-constructed using modern web technologies including Bootstrap, jQuery, and Glider.js for UI components. It leverages CDN and cloud hosting providers to ensure fast and reliable access globally. The site is mobile-optimized, accessible, and SEO-friendly, providing a smooth user experience. However, explicit privacy and cookie policies are not present, and no contact emails or phone numbers are listed, which could be improved for transparency and compliance. From a security perspective, the site uses HTTPS and has a dedicated security page, but lacks explicit security headers and a published security.txt file for vulnerability disclosure. No obvious vulnerabilities or exposed sensitive data were detected. The WHOIS data for the domain is incomplete or unavailable, which slightly reduces trustworthiness but is mitigated by the site's professional appearance, community trust, and sponsorships. Overall, Haskell.org is a high-quality, trustworthy resource for the Haskell community with strong technical foundations and good security posture. Enhancements in privacy compliance, security header implementation, and WHOIS transparency would further strengthen its credibility and user trust.

Scanned

NIS2 and GDPR posture

GDPR outside view
35/ 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

8 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 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

      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 haskell.org

This scan found 25 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
45
Email security
60
DNS health
75
Network security
40
GDPR outside view
35
Average
51

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

Haskell.org occupies a leading position as the central resource for the Haskell programming language, serving a niche but global developer community focused on functional programming. Its non-profit business model emphasizes open source collaboration, education, and ecosystem growth rather than direct monetization. Revenue streams likely include donations and sponsorships from technology companies that benefit from Haskell's ecosystem. The site demonstrates strong partnerships with infrastructure and analytics providers, indicating a mature operational model. The presence of testimonials from notable companies using Haskell underscores its industry relevance and adoption. Growth indicators include active community engagement, frequent content updates, and a broad package ecosystem. Strategic observations suggest continued focus on ecosystem support, tooling improvements, and community building to maintain and expand market presence.

Security posture

The security maturity of Haskell.org is moderate to high. The site enforces HTTPS and maintains a dedicated security page, signaling awareness and commitment to security best practices. However, the absence of explicit security headers such as Content Security Policy, HSTS, and X-Frame-Options represents an area for improvement. No forms or user input fields reduce attack surface, and no vulnerable or outdated libraries were detected in the client-side code. The lack of a published security.txt file and explicit incident response contact information limits transparency and responsiveness to security issues. WHOIS data unavailability is a minor concern for domain trust. Overall, the site demonstrates a solid security foundation appropriate for an informational and community resource site but should enhance transparency and header protections to improve resilience and compliance.

Recommendations

  1. Implement and enforce security headers including CSP, HSTS, X-Frame-Options, and X-Content-Type-Options to mitigate common web vulnerabilities.
  2. Publish a security.txt file at the root domain to provide clear vulnerability disclosure and incident response contact information.
  3. Add comprehensive privacy and cookie policies with explicit user consent mechanisms to improve GDPR and privacy compliance.
  4. Provide clear and verified contact information including emails and phone numbers for business and security inquiries to enhance transparency.
  5. Investigate and resolve WHOIS data availability issues to improve domain registration trust and legitimacy verification.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Haskell.org, Inc.
Description
The Haskell purely functional programming language home page. Provides resources, documentation, downloads, community links, and educational content about the Haskell programming language.
Key services
Language documentation, Downloads of Haskell tools and platform, Interactive playground, Community engagement, Security information, Donations
Content quality
excellent
Branding
consistent

Technology

Stack
HTML5, CSS, JavaScript, Bootstrap, jQuery, Glider.js, GHC (Haskell compiler) referenced, GHCup, haskell-language-server
Frameworks
Bootstrap
Performance
fast
Mobile
good
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced (implied by site URL)
  • Security page present
  • No exposed sensitive data in HTML
  • No vulnerable libraries detected in scripts

Analytics and tracking

Tracking level
minimal
Privacy practices
poor

Advertising

Tracking pixels
scarf.sh
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 no blocking detected.
  2. No privacy or cookie policies explicitly found on the site.
  3. No contact emails or phone numbers explicitly listed on the main pages.
  4. Strong community and sponsor presence with multiple reputable companies.
  5. No security.txt or vulnerability disclosure page found.
  6. Modern and clean technical implementation with good performance and mobile optimization.
  7. No explicit security headers detected in the HTML source.
  8. No analytics or tracking scripts detected except a tracking pixel from scarf.sh.
  9. No forms detected on the homepage or main content for data collection.
  10. WHOIS data is missing or inaccessible, limiting domain trust verification.
Technical notes

Notes

The website is built on a modern, responsive front-end stack utilizing HTML5, CSS, Bootstrap, and JavaScript libraries such as jQuery and Glider.js for interactive components. Hosting and content delivery leverage reputable providers including Fastly CDN, Digital Ocean, and DreamHost, ensuring high availability and performance. The site is mobile-optimized and accessible, with good SEO practices evident in meta tags and structured content. No CMS was detected, suggesting a custom or static site approach. Performance is fast with minimal external dependencies. Technical risks are low, but the absence of security headers and incomplete WHOIS data represent areas for technical and operational improvement. Overall, the infrastructure supports a professional and scalable web presence suitable for the Haskell community.
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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