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Security report for euid.eu

European Unified ID · Technology · N/a

Medium risk. 6 critical or high findings in Email security, Security headers and 2 other checks.

Security score

66/100

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 in enabling personalization, targeting, measurement, and security for advertisers, publishers, DSPs, and data providers. The presence of partnerships with major industry players such as Adobe, Google, Salesforce, and Rakuten underscores its market relevance and trustworthiness. Technically, the website is built using modern web technologies including Docusaurus, React, and integrates Google Tag Manager and Algolia DocSearch for analytics and search functionality. The site is mobile-optimized with good navigation and professional design, although accessibility features are basic. Performance is moderate with prefetching of assets to improve load times. From a security perspective, HTTPS is implied and encrypted data usage is a positive practice. However, the absence of explicit security headers, privacy and cookie policies, incident response contacts, and vulnerability disclosure mechanisms indicates room for improvement in security posture and compliance. No critical vulnerabilities or suspicious patterns were detected. Overall, the website demonstrates a solid business credibility and technical foundation but would benefit from enhanced privacy compliance and security transparency to improve trust and regulatory adherence.

Scanned

This is an earlier scan of euid.eu. View the latest report

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

6 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
85
Security headers
30
Email security
40
DNS health
75
Network security
100
GDPR outside view
68
Average
66

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 and media sectors, focusing on digital advertising identity solutions. Its business model centers on providing an open-source, privacy-conscious identity standard leveraging encrypted user data. The target customers include advertisers, publishers, DSPs, and data providers within Europe. The company has established a strong partnership ecosystem with leading global and regional companies, enhancing its market position. Revenue streams likely derive from partnerships and service integrations. The website content and partner logos suggest a small but strategically important entity in the ad tech space, with growth potential tied to privacy regulations and digital advertising trends.

Security posture

The website exhibits a moderate security maturity level. HTTPS is used, and encrypted data handling is a core feature of the business. However, the lack of explicit security headers (such as CSP, HSTS), absence of published privacy and cookie policies, and no visible incident response or vulnerability disclosure information represent compliance gaps. There is no evidence of exposed sensitive data or vulnerable libraries in the HTML content. The site lacks contact channels for security incidents, which may impact incident response readiness. Overall, the security culture appears nascent with opportunities to enhance transparency and compliance with GDPR and NIS2 requirements.

Recommendations

  1. Publish comprehensive privacy and cookie policies with clear GDPR compliance statements.
  2. Implement and advertise an incident response contact channel (e.g., security@ or abuse@ email).
  3. Add security headers such as Content-Security-Policy, Strict-Transport-Security, and X-Frame-Options.
  4. Establish a vulnerability disclosure program or security.txt file to encourage responsible reporting.
  5. Enhance accessibility features to improve compliance and user experience for all users.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

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

Technology

Stack
JavaScript, React (implied by Docusaurus usage), Google Tag Manager, Algolia DocSearch, The Trade Desk Forms JS
Frameworks
Docusaurus v3.8.1
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
70/100
Good practices seen
  • HTTPS implied by canonical URL
  • Use of encrypted data for identity

Analytics and tracking

Services
Google Analytics (via GTM)
Tracking level
moderate
Privacy practices
basic

Advertising

Ad networks
The Trade Desk
Marketing tools
Algolia DocSearch
Transparency
basic

Site quality

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

Key observations

  1. Website is an open-source identity solution focused on European digital advertising.
  2. Strong partner ecosystem with major industry players.
  3. No explicit privacy or cookie policies found on the main page.
  4. Uses modern web technologies and frameworks.
  5. No visible security policy or incident response information.
  6. No contact emails or phone numbers explicitly provided.
  7. No vulnerability disclosure or security.txt found.
  8. Content is professional and safe for general audiences.
Technical notes

Notes

The website is built on the Docusaurus framework (v3.8.1), indicating a modern React-based static site generator optimized for documentation. It uses Google Tag Manager for analytics and The Trade Desk's forms library for form handling. Algolia DocSearch integration provides efficient search capabilities. The site prefetches multiple JavaScript assets to improve performance. The design is responsive and mobile-friendly with good navigation clarity. However, no explicit hosting provider information is available. The technical stack is modern and well-suited for the site's purpose, though performance could be further optimized by reducing the number of prefetch requests and enhancing accessibility compliance.
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. 68/100Medium30 findingsView report
  2. 68/100 +14Medium30 findingsView report
  3. 54/100Medium30 findingsView report
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