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Security report for interstices.info

Interstices · Education · France

Medium risk. 5 critical or high findings in Security headers and GDPR outside view.

Security score

63/100

Risk levelMedium

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

Interstices.info is a French-language educational platform dedicated to explaining and disseminating research in computer science and applied mathematics. It is operated under the auspices of Inria, a major French national research institution, positioning it as a reputable source in the digital sciences education sector. The website offers a variety of content types including articles, podcasts, videos, dossiers, quizzes, and newsletters, targeting researchers, students, and professionals interested in digital sciences. The platform is well-branded and maintains consistent, high-quality content with a clear focus on education and research communication. Technically, the site is built on WordPress and leverages several modern web technologies and plugins such as FacetWP for filtering, Relevanssi for search, MailOptin for newsletter subscriptions, and Matomo for privacy-conscious analytics. However, the site suffers from a critical security shortfall: it lacks a valid SSL certificate and does not enforce HTTPS, exposing users to potential risks. Performance is suboptimal with slow load times and a large page size, though mobile optimization and SEO practices are good. Accessibility is basic but present. From a security perspective, the absence of HTTPS and security headers significantly lowers the site's security posture. There are no detected vulnerabilities or subdomain takeover risks, but the lack of modern TLS protocols and HSTS is a concern. Privacy compliance is strong with clear privacy and cookie policies and consent mechanisms in place. Contact information is limited to a contact form, with no direct emails or phone numbers provided. Overall, while Interstices.info excels in content quality and educational value, it requires urgent improvements in security infrastructure to protect its users and enhance trust. Strategic recommendations include implementing a valid SSL certificate, enabling HTTPS with HSTS, adding security headers, and optimizing performance. These steps will strengthen the site's security posture and align it with best practices for privacy and user protection.

Scanned

NIS2 and GDPR posture

GDPR outside view
25/ 100 · Critical
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

5 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. 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

    • High

      Third-party services without privacy policy

      Detected services: Facebook, Twitter, LinkedIn, Cloudflare, Google APIs

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

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

Keep watching interstices.info

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

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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
50
Security headers
65
Email security
50
DNS health
85
Network security
100
GDPR outside view
25
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

Interstices.info occupies a niche in the French digital education and research communication market, leveraging its affiliation with Inria to establish credibility and authority. Its business model centers on providing free educational content to a specialized audience, likely funded or supported by research grants or institutional backing. The platform's diverse content offerings and active newsletter suggest a strategy focused on engagement and community building within the academic and professional digital sciences sectors. The use of Matomo analytics indicates a privacy-aware approach to user data, aligning with European GDPR standards. The absence of direct contact emails or phone numbers may reflect a preference for controlled communication channels via forms, typical for institutional sites. The partnership with Inria is a key asset, enhancing market position and trustworthiness.

Security posture

The website's security posture is currently weak due to the lack of a valid SSL certificate and absence of HTTPS enforcement, which is a critical vulnerability exposing users to interception and man-in-the-middle attacks. No security headers such as Content-Security-Policy or X-Frame-Options are present, reducing protection against common web attacks. However, no known SSL vulnerabilities or subdomain takeover risks were detected. The site uses modern JavaScript libraries and plugins without known vulnerabilities. Privacy policies and cookie consent mechanisms are implemented, indicating compliance awareness. Incident response and security policy documentation are not found, suggesting limited formal security governance. Overall, the site requires immediate remediation of SSL/TLS issues and enhancement of security headers to improve its security maturity and protect user data effectively.

Recommendations

  1. Install and maintain a valid SSL/TLS certificate and enforce HTTPS site-wide.
  2. Enable HTTP Strict Transport Security (HSTS) to prevent protocol downgrade attacks.
  3. Implement security headers such as Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options.
  4. Optimize website performance by reducing page size and resource count to improve load times.
  5. Enhance accessibility features to meet higher standards and improve user experience for all users.
Technical notes

Notes

The website is built on WordPress CMS with a modern tech stack including jQuery, FacetWP for faceted search, Relevanssi for live search, MailOptin for newsletter management, and Matomo for analytics. It uses Google Fonts and MathJax for rendering mathematical content. The hosting IP suggests academic or research institution hosting, consistent with Inria affiliation. Performance metrics indicate slow load times and a large number of resources, which could impact user experience. SEO is well implemented with comprehensive meta tags, Open Graph, and JSON-LD structured data. Mobile optimization is good with responsive design elements. However, the lack of HTTPS and security headers is a significant technical risk. The site uses asynchronous loading for some scripts, which is good for performance. Overall, the technical infrastructure is solid but requires security and performance improvements.
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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