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Security report for grandlyon.com

Métropole de Lyon · Government · France

Medium risk. 3 critical or high findings in GDPR outside view, SSL/TLS and 1 other check.

Security score

74/100

Risk levelMedium

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

The Métropole de Lyon website serves as the official digital presence of the metropolitan government authority for Lyon, France. It provides comprehensive information and services to residents and professionals across 58 communes and a population of 1.4 million. The site focuses on public services such as waste management, housing, transportation, citizen engagement, and economic development, positioning itself as a key regional government resource. The website is well-branded, professionally designed, and consistent with government standards, targeting a broad audience within the metropolitan area. Technically, the site is built on TYPO3 CMS with modern front-end technologies including Bootstrap 5 and Popper.js, ensuring responsive design and good accessibility. It employs privacy-respecting analytics via Matomo and uses a robust cookie consent management system (Tarteaucitron.js), reflecting a mature digital infrastructure with strong privacy compliance. The site is performant with good SEO and accessibility features. From a security perspective, HTTPS is enforced, and privacy best practices are observed, including cookie consent and minimal tracking. However, the absence of visible security headers and a published security policy or incident response contact suggests room for improvement in security transparency and defense-in-depth. No vulnerabilities or suspicious content were detected. Overall, the website is a trustworthy, professional government portal with excellent content quality and privacy compliance. The lack of WHOIS data is a minor concern but likely due to querying limitations or privacy protection. Strategic recommendations include enhancing security headers, publishing a security policy, and establishing a vulnerability disclosure channel to further strengthen trust and security posture.

Scanned

NIS2 and GDPR posture

GDPR outside view
68/ 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

3 findings rated critical or high. Fix these first.

  1. GDPR outside view

    These are the privacy signals visitors and data protection authorities look for under GDPR.

    • 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

  2. 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

  3. DNS health

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

    • High

      Domain Expires Soon

      Domain expires in 27 days

      What to do: Renew domain registration before expiration

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

Keep watching grandlyon.com

This scan found 20 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.

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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
77
Security headers
65
Email security
70
DNS health
65
Network security
100
GDPR outside view
68
Average
74

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

Métropole de Lyon operates as a large government entity providing essential public services to a significant population in France. Its market position is that of a regional authority with a broad mandate covering urban planning, social services, environmental management, and citizen participation. The business model is public sector funded, focusing on service delivery rather than profit. The website ecosystem includes multiple partner domains that extend service offerings digitally. The organization demonstrates strong digital maturity with integrated privacy and accessibility features. Growth indicators include active citizen engagement platforms and comprehensive service coverage. Partnerships with specialized service sites enhance operational reach and user convenience.

Security posture

The website exhibits a solid baseline security posture with HTTPS enforced and privacy-conscious analytics. The use of a cookie consent manager aligns with GDPR requirements, and no sensitive data exposure was found. However, the absence of key security headers such as Content-Security-Policy and lack of a published security policy or incident response contacts indicate gaps in security maturity. No vulnerability disclosure or security.txt file was found, limiting transparency for security researchers. Overall, the site is secure for general public use but could benefit from enhanced security controls and communication to improve resilience and trust.

Recommendations

  1. Implement and enforce security headers including Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options.
  2. Publish a clear security policy and provide incident response contact information on the website.
  3. Establish a vulnerability disclosure program or security.txt file to facilitate responsible reporting.
  4. Regularly audit and update third-party scripts and libraries to mitigate potential vulnerabilities.
  5. Enhance monitoring and logging to detect and respond to security incidents promptly.

Contact details published on the site

Addresses
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Métropole de Lyon
Description
La Métropole de Lyon est une collectivité territoriale créée le 1er janvier 2015. Elle rassemble 58 communes et 1,4 million d'habitants. Elle agit pour favoriser l'innovation, renforcer le dynamisme économique, développer un territoire plus solidaire et équilibré, et améliorer la qualité de vie des habitants.
Key services
Waste management, Housing and urban planning, Water management, Transportation, Citizen participation, Economic development, Social services
Content quality
excellent
Branding
consistent

Technology

Stack
TYPO3 CMS, Bootstrap 5, Popper.js, Tom Select, Tarteaucitron.js, Matomo Analytics
Frameworks
TYPO3 CMS
Performance
moderate
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Cookie consent management implemented
  • No exposed sensitive data found in HTML
  • Use of Matomo for privacy-respecting analytics

Analytics and tracking

Services
Matomo Analytics
Tracking level
minimal
Privacy practices
excellent

Advertising

Tracking pixels
Matomo Analytics
Marketing tools
Tarteaucitron.js
Transparency
excellent

Site quality

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

Key observations

  1. Official French metropolitan government website
  2. Comprehensive public service information and resources
  3. Strong privacy and cookie consent implementation
  4. No signs of malicious or suspicious activity
  5. Modern and accessible website design
  6. WHOIS data unavailable or inaccessible for the domain
  7. No explicit security policy or incident response contact published
Technical notes

Notes

The website is built on TYPO3 CMS, a mature and extensible content management system, combined with modern front-end frameworks like Bootstrap 5 for responsive design. It uses JavaScript libraries such as Popper.js and Tom Select for UI enhancements and Tarteaucitron.js for cookie consent management. Analytics are handled via Matomo, emphasizing privacy. The site demonstrates good mobile optimization and accessibility compliance. Performance is moderate, with potential for improvement through optimization of assets and caching strategies. The technical stack is well-suited for a government portal, balancing usability, privacy, and maintainability.
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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