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Security report for eulerian.com

Eulerian · Technology · France

Medium risk. 6 critical or high findings in Security headers, GDPR outside view and 2 other checks.

Security score

58/100

Risk levelMedium

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

Eulerian is a French-based technology company specializing in marketing attribution, analytics, and activation through a SaaS platform. The website presents a professional and comprehensive marketing solution targeting marketing professionals and digital analysts. The platform supports multiple languages, indicating an international market approach. Technically, the site is built on WordPress using Elementor and Yoast SEO, ensuring good SEO and user experience. The site is mobile optimized and includes GDPR-compliant privacy and cookie policies, reflecting a mature digital presence. Security posture is good with HTTPS and consent mechanisms, though some security headers and policies could be improved. WHOIS data is missing or privacy protected, which slightly reduces trust but does not outweigh the professional presentation. Overall, Eulerian demonstrates a solid business and technical foundation with room for enhanced security transparency.

Scanned

NIS2 and GDPR posture

GDPR outside view
58/ 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

6 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 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

  3. 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

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

Keep watching eulerian.com

This scan found 21 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
72
Security headers
30
Email security
85
DNS health
85
Network security
20
GDPR outside view
58
Average
58

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

Eulerian operates in the marketing technology sector, offering attribution and analytics services that are critical for advertisers and marketers to measure campaign effectiveness. The business model is SaaS-based, providing scalable solutions with a free version and paid offerings. The company targets medium to large enterprises and marketing agencies. The multi-language website and structured content indicate a focus on European and international markets. Eulerian's competitive advantage lies in its comprehensive attribution algorithms and activation capabilities. The presence of documentation, blog, and use cases supports customer education and engagement. The company appears to be medium-sized with a focus on technology innovation and compliance with data protection regulations.

Security posture

The website enforces HTTPS and uses consent frameworks for GDPR compliance, indicating a good baseline security posture. However, the absence of explicit security headers such as Content Security Policy, HSTS, and X-Frame-Options suggests room for improvement. No security.txt or incident response information is published, which could enhance transparency and readiness. No vulnerabilities or exposed sensitive data were detected in the HTML content. The use of third-party scripts like SirData for consent management is a positive privacy practice. Overall, the security posture is good but could be strengthened with additional headers and published security policies.

Recommendations

  1. Implement and enforce security headers including CSP, HSTS, and X-Frame-Options to mitigate common web attacks.
  2. Publish a security policy and incident response page to improve transparency and trust.
  3. Add a security.txt file to facilitate vulnerability disclosure and responsible reporting.
  4. Regularly audit third-party scripts and dependencies to avoid introducing vulnerabilities.
  5. Enhance accessibility features to comply with standards and improve user experience for all users.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Eulerian
Description
La solution complète d'Attribution, d'Analytics et d'Activation. Version gratuite. Attribution walled garden, post impression, plateforme attribution, algorithme attribution, saas attribution.
Key services
Attribution, Analytics, Activation
Content quality
excellent
Branding
consistent

Technology

Stack
WordPress, Yoast SEO, Elementor, Google Fonts, JavaScript
Frameworks
Elementor
Platforms
WordPress
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • No exposed sensitive data in HTML
  • Use of consent framework scripts for GDPR compliance

Analytics and tracking

Tracking level
moderate
Privacy practices
good

Advertising

Tracking pixels
SirData
Marketing tools
Yoast SEO, Google Fonts
Transparency
basic

Site quality

Design
excellent
User experience
good
Content relevance
excellent
Navigation
good
Professionalism
excellent
Trustworthiness
high
Technical notes

Notes

The website is built on a modern WordPress CMS platform using Elementor for page building and Yoast SEO for search engine optimization. It uses Google Fonts and JavaScript for enhanced UI/UX. The site is mobile responsive and well-structured with semantic HTML and JSON-LD structured data for SEO. Performance is moderate, likely due to the use of multiple CSS and JS assets. No hosting provider information was detected from the HTML. The site uses a consent framework script for cookie management, indicating compliance with privacy regulations. Technical debt appears low, but improvements in security headers and accessibility could be made to modernize the infrastructure further.
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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