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Security report for euronext.com

Euronext · Finance · Netherlands

Low risk. 3 critical or high findings in Security headers, GDPR outside view and 1 other check.

Security score

77/100

Risk levelLow

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

Euronext is a leading pan-European stock exchange and market infrastructure provider connecting multiple European economies to global capital markets. The company offers a broad range of services including equities, bonds, ETFs, funds listings, trading platforms, post-trade services, and market data solutions. Its market position is strong as a key financial market operator with subsidiaries across major European financial centers. The website reflects a mature digital presence built on Drupal 10, with modern UI components and mobile optimization, supporting a professional user experience for investors, issuers, and market participants. Security posture is robust with HTTPS, security headers, and no visible vulnerabilities, though the absence of public WHOIS data and explicit security policies slightly reduce trust. Overall, the site is well-structured, compliant with privacy regulations, and demonstrates good business credibility.

Scanned

This is an earlier scan of euronext.com. 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

3 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"

  2. 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

  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 euronext.com

This scan found 19 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

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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
55
Email security
83
DNS health
85
Network security
100
GDPR outside view
68
Average
77

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

Breach exposure

Leaked credentials and lookalike domains from OffSeq Breach. The counts are free; the detailed lists are paid add-ons.

Dark web exposure

Add-on

Leaked records that mention euronext.com, from OffSeq Breach.

Total records
478
Employees
2
Customers
448
Third parties
28
Weak passwords
14%

Latest record dated 2025-07-02 · 26 subdomains affected

See the 10 newest leaked credentials

A one-off add-on to this report that lists the most recent identifier and password pairs OffSeq Breach holds for euronext.com.

Select it in the checkout above.

Masked preview

  • –remote1.euronext.com2025-07-02
  • –remote1.euronext.com2025-04-14

Breach keeps ingesting new leaks, so these numbers can grow between scans.

Open in Breach(opens in a new tab)Monitor on Breach(opens in a new tab)

Technical appendix

Business context, site observations and technical notes gathered during the scan, and the standards behind each reference.

Business context

Business profile

Euronext operates as an essential entity in the finance sector, providing critical market infrastructure and services. Its business model revolves around listing fees, trading fees, clearing and settlement services, and data monetization. The target customers include institutional investors, issuers, brokers, and financial intermediaries. The company benefits from a diversified portfolio of subsidiaries in key European markets, enhancing its competitive advantage. Growth indicators include expansion of ESG-related products and technology-driven trading solutions. The partnership ecosystem is implied through its subsidiaries and technology providers. Strategic observations highlight the importance of maintaining transparency and enhancing domain registration legitimacy to reinforce trust.

Security posture

The security maturity level of the website is high, with enforced HTTPS, comprehensive security headers, and no detected vulnerable libraries or exposed sensitive data. However, the lack of a publicly available security policy, incident response contacts, and vulnerability disclosure program indicates room for improvement in transparency and incident readiness. Compliance with GDPR is evident through privacy and cookie policies with consent mechanisms. The security culture appears professional but could benefit from enhanced communication of security governance and certifications. No critical vulnerabilities or security gaps were identified in the website content or technical stack.

Recommendations

  1. Publish a clear security policy and incident response contact information on the website.
  2. Implement and publicize a vulnerability disclosure program or security.txt file.
  3. Verify and update WHOIS domain registration information to improve transparency and trust.
  4. Regularly audit and update third-party libraries and dependencies to mitigate potential vulnerabilities.
  5. Enhance communication of security certifications and compliance achievements to strengthen trust signals.

Contact details published on the site

Addresses
Legal name
Euronext N.V.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Euronext
Description
Euronext is the pan-European stock exchange and market infrastructure, connecting European economies to global capital markets to accelerate growth.
Key services
Equities listing, Bond listing, ETFs, Funds, Warrants & Certificates, Structured Notes, Trading platforms, Post-trade services, Market data and analytics
Content quality
excellent
Branding
consistent

Technology

Stack
Drupal 10, Bootstrap Slider, Select2, Line Awesome Icons, Google Tag Manager
Frameworks
Drupal
Performance
moderate
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
90/100
Good practices seen
  • HTTPS enforced
  • Security headers present
  • No exposed sensitive data in HTML
  • No vulnerable libraries detected
  • Forms protected with anti-bot measures

Analytics and tracking

Services
Google Tag Manager
Tracking level
moderate
Privacy practices
good

Advertising

Transparency
good

Site quality

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

Key observations

  1. Website is fully accessible with rich content and navigation
  2. Professional and consistent branding aligned with a major European stock exchange
  3. No signs of phishing or malware
  4. WHOIS data missing, which reduces trustworthiness score
  5. Good privacy and cookie policy presence with consent mechanisms
  6. No explicit security policy or incident response contact publicly found
  7. No vulnerability disclosure or security.txt found
  8. Use of modern web technologies and CMS
  9. Google Tag Manager used for analytics and marketing
Technical notes

Notes

The website is built on Drupal 10 CMS, leveraging modern front-end libraries such as Bootstrap Slider and Select2 for enhanced UI components. It uses Google Tag Manager for analytics and marketing, indicating a mature digital marketing strategy. The site is mobile-optimized with responsive design and accessibility considerations. Performance is moderate, likely due to extensive CSS and JavaScript assets, but overall user experience is smooth. Hosting provider details are not explicit, but the presence of security headers and HTTPS suggests a professionally managed infrastructure. Technical risks are minimal, though continuous monitoring and modernization are recommended to maintain operational excellence.
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. 66/100 −14Medium23 findingsView report
  2. 80/100Low23 findingsView report
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