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Security report for web4u.cz

WEB4U s.r.o. · Technology · Czech Republic

Medium risk. 4 critical or high findings in GDPR outside view and SSL/TLS.

Security score

71/100

Risk levelMedium

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

WEB4U s.r.o. is a Czech-based technology company specializing in web hosting, domain registration, server hosting, and VPN services. The company targets individuals and businesses seeking reliable online presence solutions, offering a range of hosting tariffs, dedicated and virtual servers, and VPN plans. The website demonstrates a mature digital infrastructure with integrated marketing and analytics tools, including Google Tag Manager, Google Ads, Intercom, and Salesmanago. The site is well-structured, professionally designed, and optimized for user experience and SEO, primarily serving the Czech market. Security posture is solid with HTTPS enforcement and reCAPTCHA integration, though explicit security policies and incident response contacts are not publicly disclosed. The absence of WHOIS data is a notable gap, raising questions about domain registration transparency. Overall, the website is trustworthy and professional, with room for improvement in security transparency and registrant information clarity.

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

4 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: Google Analytics, Facebook, Cloudflare

      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 web4u.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.

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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
65
Email security
85
DNS health
75
Network security
100
GDPR outside view
40
Average
71

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

WEB4U operates as an important entity in the Czech technology sector, focusing on web services with a medium-sized business footprint. Its competitive advantage lies in a comprehensive portfolio of hosting and domain services, backed by SLA guarantees and customer support. The business model is service-oriented, generating revenue from hosting subscriptions, domain registrations, and managed server offerings. The company leverages partnerships with technology providers and integrates advanced marketing automation to enhance customer engagement. Growth indicators include a large managed domain base and diversified service plans. Strategic observations suggest opportunities to enhance trust through improved transparency of domain registration and security policies.

Security posture

The website exhibits a good security maturity level with HTTPS, secure form handling, and anti-spam/antivirus measures on email services. However, the lack of published security policies and incident response contacts limits transparency. No vulnerabilities or exposed sensitive data were detected in the HTML content. Compliance with GDPR is indicated through cookie consent mechanisms and privacy policy presence. The integration of reCAPTCHA and secure cookies further strengthens security. To elevate security posture, the company should publish detailed security and incident response policies and implement additional HTTP security headers.

Recommendations

  1. Publish a dedicated security policy and incident response page with clear contact information.
  2. Verify and update WHOIS domain registration data to ensure transparency and trust.
  3. Implement additional HTTP security headers such as Content-Security-Policy and X-Frame-Options.
  4. Regularly audit third-party scripts and marketing tools for security vulnerabilities.
  5. Enhance accessibility features and provide more comprehensive privacy compliance disclosures.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
WEB4U s.r.o.
Description
Web4u nabízí kvalitní webové služby, které umožní vaší online prezentaci posunout se o úroveň výš. Vyberte si z registrace domény, hostingu a dalších nabízených služeb.
Key services
Domain registration, Webhosting, Server hosting (dedicated, virtual, managed), VPN services
Content quality
good
Branding
consistent

Technology

Stack
jQuery 2.1.1, Bootstrap CSS/JS, Google Tag Manager, Google Ads, Google reCAPTCHA, Intercom chat widget, Salesmanago marketing automation, jQuery UI
Frameworks
Bootstrap
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Google reCAPTCHA integration on forms
  • Use of secure cookies (implied by cookie consent)
  • No exposed sensitive data in HTML

Analytics and tracking

Services
Google Tag Manager, Google Analytics (implied)
Tracking level
moderate
Privacy practices
good

Advertising

Ad networks
Google Ads
Tracking pixels
Intercom, Salesmanago, Reddit Ads Pixel, Quora Events
Marketing tools
Salesmanago, Intercom
Transparency
good

Site quality

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

Key observations

  1. Website is fully accessible with no blocking or WAF challenges.
  2. Content is professionally presented in Czech language targeting local market.
  3. WHOIS data is missing, which is unusual and warrants further investigation.
  4. Strong use of marketing and analytics tools indicating mature digital presence.
  5. No explicit security policy or incident response information publicly available.
  6. Cookie consent mechanism is implemented and GDPR compliance is indicated.
  7. No direct company contact emails or phone numbers found in the HTML content.
  8. Social media presence limited to Facebook link.
Technical notes

Notes

The website uses a modern technology stack including jQuery, Bootstrap, Google Tag Manager, and marketing automation tools like Salesmanago and Intercom. Performance is moderate with asynchronous loading of scripts and optimized CSS. The site is mobile responsive and SEO optimized with proper meta tags and structured navigation. No CMS was explicitly detected, suggesting a custom or proprietary platform. Hosting provider details are not disclosed. Technical risks are minimal but include reliance on multiple third-party scripts which require ongoing security monitoring. Opportunities exist to improve accessibility and implement advanced security headers to reduce attack surface.
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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