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Security report for eustream.sk

eustream, a.s. · Energy · Slovakia

Medium risk. 5 critical or high findings in GDPR outside view, Security headers and 1 other check.

Security score

72/100

Risk levelMedium

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

EUSTREAM, a.s. operates the Slovak gas transmission system, serving as a critical energy corridor in Central Europe. The company provides natural gas transportation services interconnected with neighboring countries, focusing on safe, reliable, and ecological gas transmission. Their website reflects a mature digital presence with comprehensive content, clear navigation, and multilingual support, targeting energy market participants and stakeholders. Technically, the site uses established libraries like jQuery and Bootstrap, with a CMS platform WebJET, delivering moderate performance and good mobile optimization. Security posture is solid with HTTPS usage and cookie consent mechanisms, though explicit security headers and incident response contacts are not evident. Overall, the site demonstrates high professionalism and trustworthiness, supported by consistent WHOIS data and domain age aligning with the company's long history.

Scanned

NIS2 and GDPR posture

GDPR outside view
40/ 100 · High
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. GDPR outside view

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

    • Critical

      EU business without adequate privacy measures

      EU businesses are subject to strict GDPR requirements

      What to do: Implement comprehensive GDPR compliance including privacy policy, cookie consent, and data protection measures

    • High

      No Privacy Policy found

      GDPR requires a clear and accessible privacy policy

      What to do: Add a comprehensive privacy policy page and link to it prominently

    • High

      Third-party services without privacy policy

      Detected services: Twitter, LinkedIn

      What to do: Document all third-party data sharing in your privacy policy

  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 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. 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 eustream.sk

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.

Daily monitoring

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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
62
Security headers
60
Email security
85
DNS health
85
Network security
100
GDPR outside view
40
Average
72

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

EUSTREAM holds a strategic market position as a key gas transmission system operator in Slovakia and Central Europe. Their business model revolves around providing transmission capacity and balancing services to European energy markets. The company emphasizes transparency, sustainability, and regulatory compliance, evident from dedicated website sections. Partnerships with European energy organizations enhance their ecosystem. The company targets institutional clients and energy market participants, with growth indicators including capacity expansions and infrastructure projects. The website content and structure support their authoritative market presence and operational transparency.

Security posture

The website exhibits a moderate to good security maturity level. HTTPS is implemented, and cookie consent mechanisms comply with GDPR requirements. However, the absence of visible security headers and explicit incident response or vulnerability disclosure information suggests room for improvement. No exposed sensitive data or vulnerable libraries were detected. The company has a dedicated cybersecurity policy page, indicating awareness of security best practices. Enhancing security headers, publishing incident response contacts, and adding a security.txt file would strengthen their security posture and compliance.

Recommendations

  1. Implement comprehensive HTTP security headers such as Content-Security-Policy, X-Frame-Options, and Strict-Transport-Security.
  2. Publish clear incident response and vulnerability disclosure contact information on the website.
  3. Add a security.txt file to facilitate responsible vulnerability reporting.
  4. Enhance website accessibility features to improve compliance and user experience.
  5. Conduct regular security audits of third-party libraries and CMS components to mitigate vulnerabilities.

Contact details published on the site

Addresses
Legal name
eustream, a.s.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
eustream, a.s.
Description
EUSTREAM is the operator of the gas transmission system in Slovakia, interconnected with major transmission routes in Austria, Czech Republic, Ukraine, Hungary, and Poland. Its mission is safe, reliable, and ecological transportation of natural gas and preparation for low-carbon and renewable gases.
Key services
Natural gas transmission, Capacity management, Balancing services, Title transfer, Connection to transmission network
Content quality
excellent
Branding
consistent

Technology

Stack
jQuery, Bootstrap, Slick Slider, Modernizr
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
75/100
Good practices seen
  • Cookie consent mechanism implemented
  • No exposed sensitive data in HTML
  • Use of HTTPS implied by canonical and og:url tags

Analytics and tracking

Tracking level
minimal
Privacy practices
good

Advertising

Transparency
poor

Site quality

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

Key observations

  1. Website is fully accessible with rich content
  2. Strong focus on transparency and regulatory compliance
  3. Comprehensive navigation structure with multilingual support
  4. Cookie consent and GDPR compliance mechanisms implemented
  5. No visible security or privacy red flags
  6. Social media presence on LinkedIn and Twitter
  7. No visible forms collecting personal data on the homepage
  8. No explicit incident response or vulnerability disclosure information
Technical notes

Notes

The website is built on a CMS platform called WebJET and utilizes common frontend technologies including jQuery, Bootstrap, Slick Slider, and Modernizr. The site is well-structured with proper meta tags and Open Graph data for SEO and social sharing. Performance is moderate, with good mobile responsiveness and basic accessibility features. No major technical debt or outdated technologies were detected, but there is potential to improve accessibility and security headers. Hosting provider details are not explicit, and no advanced frameworks or platforms were identified beyond the CMS and JavaScript libraries.
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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