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Security report for nubium.cz

Nubium Development SE · Technology · Czech Republic

Medium risk. 10 critical or high findings in Security headers, GDPR outside view and 3 other checks.

Security score

50/100

Risk levelMedium

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

Nubium Development SE is a Czech-based technology company founded in 2013, specializing in comprehensive web application solutions including cloud storage, CDN, video encoding, cybersecurity, and Linux systems management. The company positions itself as a leader in high-load applications and data distribution networks, targeting businesses across various industries seeking scalable and secure digital infrastructure. The website reflects a professional and consistent brand image with clear service offerings and a focus on sustainability. Technically, the website employs standard web technologies such as HTML5, CSS, JavaScript, and jQuery, with a moderate performance profile and good mobile optimization. However, there is a lack of advanced security headers and no visible CMS or hosting provider information. SEO and accessibility are basic but adequate for the site’s scope. From a security perspective, the site uses HTTPS (assumed from URL), but lacks explicit security headers and published security policies. No vulnerability disclosure or incident response contacts are provided, which could be improved to enhance trust and compliance. Privacy and cookie policies are absent, indicating potential compliance gaps with GDPR and related regulations. Overall, the website is safe, professional, and business-focused with no adult or questionable content. The domain WHOIS data aligns well with the company’s stated information, supporting legitimacy. Strategic recommendations include publishing privacy and cookie policies, implementing security headers, and adding incident response information to strengthen security posture and regulatory compliance.

Scanned

NIS2 and GDPR posture

GDPR outside view
50/ 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

10 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 Strict-Transport-Security header

      Forces HTTPS connections

      What to do: Add "Strict-Transport-Security: max-age=31536000; includeSubDomains; preload"

      • CWE-319
      • OWASP A04:2025
      • ASVS V3.4.1
    • 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 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

      No Cookie Policy found

      GDPR requires clear information about cookie usage

      What to do: Add a dedicated cookie policy explaining cookie usage and purposes

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

Keep watching nubium.cz

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

€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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Full report

€39.90one-time

  • The complete analysis as a PDF you can cite
  • Email delivery with an unlock code
  • Lifetime access to this report

Prices incl. 21% VAT. Secure checkout by Mollie; sold by SEQ SIA, Latvia.

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
15
Email security
65
DNS health
85
Network security
20
GDPR outside view
50
Average
50

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

Nubium Development SE operates in the technology sector, providing B2B digital infrastructure and software development services. Their competitive advantage lies in offering a broad range of scalable solutions tailored to high-load and high-availability requirements, including cloud storage, CDN, and cybersecurity. The company targets medium to large enterprises needing robust web applications and data distribution. Revenue streams likely derive from service contracts and custom development projects. The company emphasizes sustainability and CO2 offsetting, which may appeal to environmentally conscious clients. No explicit partnerships or subsidiaries are identified, suggesting a focused operational model. Growth indicators include a clear career page and ongoing technology updates. The company maintains a professional online presence but could enhance transparency with additional policies and contact channels.

Security posture

The current security maturity level is moderate. The website uses HTTPS but lacks critical security headers such as Content-Security-Policy, X-Frame-Options, and Strict-Transport-Security. There is no published privacy or cookie policy, nor a vulnerability disclosure or security.txt file. Incident response readiness is not evident, with no dedicated security contact emails. No exposed sensitive data or vulnerable libraries were detected in the provided content. The absence of these security best practices and compliance documents represents a gap that could impact trust and regulatory adherence. The company should prioritize implementing security headers, publishing privacy and cookie policies, and establishing clear incident response procedures to improve their security posture and compliance with GDPR and other standards.

Recommendations

  1. Publish a comprehensive privacy policy and cookie policy with GDPR compliance details.
  2. Implement and enforce security headers including Content-Security-Policy, X-Frame-Options, and Strict-Transport-Security.
  3. Create and publish a vulnerability disclosure policy or security.txt file to facilitate responsible reporting.
  4. Add incident response contact information such as security@ or abuse@ email addresses.
  5. Enhance website accessibility and SEO by adding ARIA labels and improving meta tags.

Contact details published on the site

Legal name
Nubium Development SE
Registration number
01485652
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Nubium Development SE
Description
Nubium Development SE focuses on complete web application solutions – from design and development, through operation and content management to customer support. Founded in 2013, the company specializes in high-load applications, data distribution networks, hosting services, and sustainability efforts including CO2 offsetting. They provide customized, scalable digital solutions including cloud storage, CDN, video encoding, cybersecurity, web applications, and Linux systems management.
Key services
High-Capacity Cloud Storage Services, Content Delivery Network, Video Encoding Services, Cybersecurity Solutions, High-Performance Web Applications, Comprehensive Web Application Development, Linux Systems Management
Content quality
good
Branding
consistent

Technology

Stack
HTML5, CSS, JavaScript, jQuery
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
50/100

Analytics and tracking

Tracking level
minimal
Privacy practices
poor

Advertising

Transparency
poor

Site quality

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

Key observations

  1. Website is fully accessible with no blocking or WAF challenges.
  2. No privacy, cookie, or terms of service policies found on the site.
  3. Contact information limited to a single company email; no phone or physical address explicitly provided.
  4. No forms detected on the site for data collection.
  5. No social media links or external marketing/analytics scripts detected.
  6. Technical implementation is basic but functional with jQuery and custom scripts.
  7. No explicit security headers or advanced security features observed.
  8. Content is business-focused, clear, and professionally presented.
  9. No advertising or tracking technologies detected.
Technical notes

Notes

The website is built with standard HTML5, CSS, and JavaScript, including jQuery for scripting. It uses custom CSS and JavaScript files but no detected CMS or modern JavaScript frameworks. The site is mobile optimized with responsive meta tags and a clear navigation structure. Performance is moderate, with no heavy external dependencies or analytics scripts detected. The absence of advanced security headers and lack of visible hosting or CDN provider information suggest opportunities for infrastructure modernization. No forms or user input fields were found, reducing attack surface but also limiting user engagement features. Overall, the technical implementation is solid but could benefit from modern security and compliance enhancements.
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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