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Security report for scala-lang.org

École Polytechnique Fédérale de Lausanne (EPFL) · Technology · Switzerland

Medium risk. 9 critical or high findings in Security headers, GDPR outside view and 2 other checks.

Security score

57/100

Risk levelMedium

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

The Scala Programming Language website represents a mature, well-established open-source technology project supported by the École Polytechnique Fédérale de Lausanne (EPFL) and major industry partners such as JetBrains, Gradle, and VirtusLab. The site provides comprehensive resources including documentation, tutorials, community engagement, and tooling for developers interested in Scala. The business model is community and sponsorship-driven, focusing on education and ecosystem growth. Technically, the site employs modern web technologies, is performant, mobile-optimized, and uses Cloudflare for DNS and CDN services. Security posture is strong with HTTPS enforced and domain transfer protections, though some improvements like DNSSEC and explicit security headers could be made. Privacy compliance is good with a clear privacy policy, but lacks a cookie consent mechanism. Overall, the site is professional, trustworthy, and serves a global developer audience effectively.

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

9 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 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

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

Keep watching scala-lang.org

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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
65
Security headers
15
Email security
70
DNS health
55
Network security
100
GDPR outside view
35
Average
57

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

Scala is positioned as a leading programming language with a strong academic foundation and industry collaboration. Its ecosystem supports multiple platforms including JVM, JavaScript, and native compilation, appealing to a broad developer base. The website highlights key use cases such as server-side applications, data processing, command line tools, and frontend web development. Partnerships with companies like VirtusLab, JetBrains, and Gradle reinforce its market credibility. The open-source nature combined with corporate sponsorships suggests a sustainable growth model. The absence of direct contact info on the site indicates a focus on community-driven support rather than direct sales or customer service.

Security posture

The website demonstrates a solid security foundation with HTTPS, clientTransferProhibited domain status, and no visible exposure of sensitive data. However, DNSSEC is not enabled, which is a recommended best practice for domain security. The site lacks explicit security headers such as Content Security Policy or HSTS in the provided data, which could enhance protection against common web attacks. Incident response contact details are not provided, which is a gap in transparency and readiness. No vulnerable or outdated libraries were detected in the frontend assets. Overall, the security posture is good but could be improved with additional hardening and transparency.

Recommendations

  1. Enable DNSSEC to improve domain name system security.
  2. Implement a cookie consent banner to comply fully with GDPR and enhance user privacy transparency.
  3. Add explicit security headers such as Content Security Policy, HSTS, and X-Frame-Options to strengthen web security.
  4. Publish clear incident response and security contact information to improve trust and readiness.
  5. Regularly audit third-party libraries and scripts to ensure no vulnerabilities are introduced.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
École Polytechnique Fédérale de Lausanne (EPFL)
Description
Scala is a programming language designed to scale from small scripts to large multiplatform applications. It combines functional and object-oriented programming paradigms and targets JVM, JavaScript, and native platforms.
Key services
Programming language development, Documentation and learning resources, Community support and governance, Ecosystem and tooling support
Content quality
excellent
Branding
consistent

Technology

Stack
Scala, JavaScript, HTML5, CSS3, Font Awesome, jQuery, Highlight.js, CodeMirror, Cloudflare DNS
Platforms
JVM, Scala.js (JavaScript), Scala Native (LLVM)
Performance
fast
Mobile
good
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Domain status clientTransferProhibited
  • No exposed sensitive data in HTML
  • No vulnerable libraries detected

Analytics and tracking

Services
Plausible Analytics
Tracking level
minimal
Privacy practices
good

Advertising

Tracking pixels
plausible.scala-lang.org
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. Strong academic and industry backing with EPFL and major technology partners.
  3. Comprehensive technical documentation and community resources available.
  4. No direct contact emails or phone numbers found on the main site.
  5. No cookie consent mechanism detected despite GDPR compliance indications.
  6. Modern tech stack with good performance and mobile optimization.
  7. Security policies are present but incident response contacts are missing.
  8. WHOIS data is consistent and domain is well-maintained.
Technical notes

Notes

The website uses a modern and robust technology stack including Scala, JavaScript, Font Awesome, jQuery, Highlight.js, and CodeMirror. It is hosted behind Cloudflare DNS and CDN, which enhances performance and security. The site is well-structured with semantic HTML and optimized for mobile devices. SEO best practices are followed with appropriate meta tags and Open Graph data. No CMS was detected, indicating a custom or static site approach, which reduces attack surface. Performance is fast with minimal blocking scripts. The site integrates analytics via Plausible, a privacy-focused service, indicating a commitment to user privacy.
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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