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Security report for euid.eu

European Unified ID · Technology · N/a

Medium risk. 5 critical or high findings in Email security, Security headers and 1 other check.

Security score

68/100

Risk levelMedium

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

European Unified ID (EUID) is an open-source identity solution designed for the European digital advertising ecosystem. It leverages encrypted email and phone number data to provide a privacy-conscious, secure, and accurate identity standard. The website positions itself as a key player enabling personalization, targeting, and measurement for advertisers, publishers, DSPs, and data providers. The presence of major partners such as Adobe, Google, and Salesforce underscores its industry relevance and collaborative approach. Technically, the site is built using modern frameworks like Docusaurus and integrates tools such as Algolia for search and Google Tag Manager for analytics, reflecting a mature digital infrastructure. Security-wise, the site enforces HTTPS and includes cookie consent mechanisms, but lacks explicit security policies or incident response information, which could be improved to enhance trust and compliance. Overall, the website is professional and well-structured, though it would benefit from publishing comprehensive privacy and terms of service documents to strengthen privacy compliance and user trust.

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

5 findings rated critical or high. Fix these first.

  1. Email security

    SPF, DKIM and DMARC stop others sending email that looks like it comes from your domain, a common route to phishing and invoice fraud.

    • Critical

      No email authentication configured

      Domain is vulnerable to email spoofing

      What to do: Implement SPF, DKIM, and DMARC immediately

    • High

      No SPF record found

      SPF helps prevent email spoofing

      What to do: Add SPF record: "v=spf1 include:_spf.yourmailprovider.com ~all"

  2. 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';…

  3. 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

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

Keep watching euid.eu

This scan found 22 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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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
95
Security headers
30
Email security
40
DNS health
75
Network security
100
GDPR outside view
68
Average
68

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

EUID operates in the technology sector, specifically focusing on identity solutions for digital advertising. Its business model centers on providing an open-source, privacy-focused identity standard that addresses the challenges of personalization and measurement in advertising without compromising user privacy. The company targets a broad audience within the advertising ecosystem, including publishers, advertisers, DSPs, and data providers. The partnership ecosystem includes prominent industry players, indicating strong market positioning and potential for growth. The website content and technical implementation suggest a medium-sized organization with a focus on innovation and compliance with European privacy standards. However, the absence of detailed business registration information and contact details limits full business transparency.

Security posture

The website demonstrates a good security posture with HTTPS enforced and the implementation of cookie consent mechanisms. However, it lacks visible security headers such as Content Security Policy (CSP), HSTS, and X-Frame-Options, which are recommended best practices. There is no published security policy or incident response plan, and no vulnerability disclosure or security.txt file is present. No vulnerabilities or exposed sensitive data were detected in the HTML content. The use of reputable third-party services like Google Tag Manager and Algolia is noted, but continuous monitoring for vulnerable libraries is advised. Enhancing transparency around security policies and incident response would improve the overall security maturity and user trust.

Recommendations

  1. Publish a comprehensive privacy policy and terms of service to improve privacy compliance and user trust.
  2. Implement and publish a security policy and incident response plan to demonstrate security readiness.
  3. Add security headers such as CSP, HSTS, and X-Frame-Options to strengthen protection against common web attacks.
  4. Introduce a vulnerability disclosure program and security.txt file to facilitate responsible reporting of security issues.
  5. Enhance contact information availability, including business contact emails and phone numbers, to improve business credibility.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
European Unified ID
Description
European Unified ID (EUID) uses encrypted email data to provide a privacy-conscious and accurate identity standard for the digital advertising ecosystem.
Key services
Identity standard leveraging encrypted email and phone number data, Personalization and targeting for digital advertising, Measurement and security for advertising ecosystem
Content quality
good
Branding
consistent

Technology

Stack
JavaScript, React (implied by Docusaurus usage), Algolia (search), Google Tag Manager, Cookielaw.org cookie consent
Frameworks
Docusaurus v3.8.1
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
80/100
Good practices seen
  • Use of HTTPS
  • Cookie consent mechanism present
  • No exposed sensitive data detected in HTML

Analytics and tracking

Services
Google Tag Manager
Tracking level
moderate
Privacy practices
basic

Advertising

Ad networks
The Trade Desk
Marketing tools
Algolia Search
Transparency
basic

Site quality

Design
good
User experience
good
Content relevance
good
Navigation
good
Professionalism
good
Trustworthiness
moderate

Key observations

  1. Website is an open-source identity solution focused on European digital advertising.
  2. Strong partnerships with major industry players.
  3. Good technical implementation with modern frameworks and privacy-conscious design.
  4. Lacks explicit privacy policy and terms of service pages.
  5. Cookie consent mechanism is implemented.
  6. No direct contact information or security policies published.
  7. No WAF or blocking detected; content fully accessible.
Technical notes

Notes

The website is built using the Docusaurus static site generator, leveraging React and modern JavaScript technologies. It integrates Algolia for search functionality and Google Tag Manager for analytics and marketing tracking. Cookie consent is managed via cookielaw.org scripts, indicating attention to privacy regulations. The site is mobile-optimized with good navigation and SEO practices. Performance is moderate, with deferred loading of JavaScript assets. No CMS beyond static site generation is detected. Hosting provider details are not explicit in the HTML content. The technical stack is modern and appropriate for the business purpose, though adding more robust security headers and improving accessibility features would enhance the technical quality.
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

Earlier scans of this domain

  1. 68/100 +2Medium30 findingsView report
  2. 66/100 +12Medium30 findingsView report
  3. 54/100Medium30 findingsView report
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