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Security report for vizus.eu

VIZUS.CZ s.r.o. · Technology · Czech Republic

Medium risk. 6 critical or high findings in GDPR outside view, SSL/TLS and 1 other check.

Security score

57/100

Risk levelMedium

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

VIZUS.CZ s.r.o. is a Czech technology company specializing in custom software development and comprehensive digital services, including web and mobile applications, hosting, domain management, and digital marketing. With over 20 years of market presence and a stable client base, they position themselves as a reliable partner for businesses seeking tailored IT solutions. Their website reflects a professional and consistent brand image, emphasizing client-centric development and ongoing project support. Technically, the company employs a proprietary CMS (Vizus CMS) and integrates modern web technologies such as Google Tag Manager for analytics and consent management. Hosting is managed on their own cloud infrastructure located in the Czech Republic, ensuring data locality and control. The website is well-optimized for performance, mobile responsiveness, and SEO, with a clear navigation structure and rich content. From a security perspective, the site enforces HTTPS and implements a detailed cookie consent mechanism, demonstrating compliance with GDPR. However, explicit security headers and a published security policy or incident response contacts are absent, representing areas for improvement. No vulnerabilities or suspicious activities were detected in the visible content or scripts. Overall, the website and business exhibit a strong security posture and digital maturity suitable for their market segment. The lack of WHOIS data slightly reduces transparency but does not detract significantly from the company's credibility. Strategic recommendations include enhancing security headers, publishing security policies, and adding vulnerability disclosure mechanisms to further strengthen trust and compliance.

Scanned

NIS2 and GDPR posture

GDPR outside view
25/ 100 · Critical
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. 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

      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

    • High

      Third-party services without privacy policy

      Detected services: Google Analytics

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

  2. 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 vizus.eu

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.

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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
72
Security headers
85
Email security
55
DNS health
85
Network security
20
GDPR outside view
25
Average
57

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

VIZUS operates in the technology sector, focusing on custom software and digital services for a diverse client base. Their competitive advantage lies in their long-term client relationships, comprehensive service offerings, and proprietary CMS technology. The business model centers on delivering tailored solutions and ongoing support, generating recurring revenue streams from hosting and maintenance. The company targets medium to large enterprises and organizations requiring specialized IT solutions. Their partnership ecosystem includes clients from various industries, as evidenced by displayed client logos. Growth indicators include a stable team, extensive project delivery, and domain management services. Strategic observations highlight their integrated approach combining development, marketing, and hosting, positioning them as a one-stop digital partner.

Security posture

The current security maturity level is good, with HTTPS enforced and a robust cookie consent framework in place. The absence of explicit security headers such as Content-Security-Policy and X-Frame-Options suggests room for enhancement. No exposed sensitive data or vulnerable libraries were identified, indicating sound development practices. Compliance with GDPR is supported by clear privacy and cookie policies. However, the lack of a published security policy and incident response contact channels limits transparency and preparedness for security incidents. The company would benefit from adopting a formal vulnerability disclosure process and publishing a security.txt file. Overall, the security culture appears proactive but could be improved by formalizing policies and communication channels.

Recommendations

  1. Implement and enforce security headers including Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options.
  2. Publish a comprehensive security policy outlining data protection and incident response procedures.
  3. Establish and publicize a vulnerability disclosure program, including a security.txt file.
  4. Regularly audit third-party scripts and dependencies for vulnerabilities and update accordingly.
  5. Enhance accessibility compliance to meet recognized standards and improve user inclusivity.

Contact details published on the site

Addresses
Legal name
VIZUS.CZ s.r.o.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
VIZUS.CZ s.r.o.
Description
Jsme vývojářská firma s více než 20 lety zkušeností na trhu. Vyvíjíme na míru, vaše projekty NEUstále ROzvíjíme a zajišťujeme komplexní služby na klíč.
Key services
custom application development, web applications, mobile applications, web hosting, domain registration and management, digital marketing and SEO, copywriting, public relations
Content quality
excellent
Branding
consistent

Technology

Stack
Google Tag Manager, CMP (Consent Management Platform) by Vizus, Custom CMS (Vizus CMS), JavaScript, CSS3, HTML5
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Cookie consent banner with granular controls
  • No exposed sensitive data in HTML
  • No vulnerable libraries detected

Analytics and tracking

Services
Google Analytics (via 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 professionally designed and content-rich.
  2. Strong focus on custom software development and digital services.
  3. Cookie consent mechanism is implemented with detailed user controls.
  4. WHOIS data is unavailable, which is common for .cz domains but reduces transparency.
  5. No security.txt or explicit security policy found.
  6. Contact information is clearly presented and includes multiple channels.
  7. No signs of malicious or suspicious content.
Technical notes

Notes

The website is built on a proprietary CMS platform (Vizus CMS) with a modern tech stack including JavaScript and CSS3. Integration of Google Tag Manager facilitates analytics and marketing tracking. Hosting is managed on private cloud infrastructure within the Czech Republic, ensuring data sovereignty. The site demonstrates fast loading times, excellent mobile optimization, and good SEO practices with appropriate meta tags and structured content. Technical debt appears minimal, with no deprecated or vulnerable libraries detected. Opportunities exist to improve security header implementation and accessibility features. The overall infrastructure supports scalability and reliable performance aligned with business needs.
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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