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Security report for vlcek-stavby.cz

JAN VLČEK · Real Estate · Czech Republic

High risk. 12 critical or high findings in GDPR outside view, Security headers and 3 other checks.

Security score

40/100

Risk levelHigh

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

Jan Vlček operates as an authorized builder and member of the Chamber of Authorized Engineers and Technicians in Construction, providing construction management and project services primarily in the Czech Republic. The business targets individuals and companies seeking professional construction oversight and authorized building services, with a focus on civil, residential, and industrial projects. The website reflects a small, local service provider with over 30 years of industry experience, supported by professional certifications and clear contact information. Technically, the website is built on WordPress using common plugins such as Contact Form 7 and Revolution Slider. It employs jQuery 1.7.2 and Google Maps API for functionality. The site shows moderate performance and basic mobile optimization but uses outdated JavaScript libraries and lacks advanced SEO and accessibility features. No analytics or tracking services are detected, indicating minimal user tracking. From a security perspective, the site uses HTTPS but lacks important security headers like Content-Security-Policy and Strict-Transport-Security. The use of outdated libraries presents potential vulnerabilities. No privacy or cookie policies are present, indicating compliance gaps with GDPR and related regulations. Contact information is clearly provided, but no incident response or security policies are visible. Overall, the website is functional and moderately professional but requires improvements in security, privacy compliance, and technical modernization to enhance trustworthiness and protect user data effectively.

Scanned

NIS2 and GDPR posture

GDPR outside view
10/ 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

12 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

  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 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';…

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

Keep watching vlcek-stavby.cz

This scan found 24 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

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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
42
Security headers
20
Email security
65
DNS health
85
Network security
20
GDPR outside view
10
Average
40

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

The business is positioned as a niche local expert in authorized construction services within the Czech Republic. Its competitive advantage lies in the owner's extensive experience and professional certifications. The business model focuses on service provision in construction project management and compliance oversight. Revenue streams likely derive from construction supervision contracts and consulting. The target customers include private individuals and companies requiring authorized building services. The website content and domain age support a mature business presence. Partnerships appear limited to web hosting and theme providers. The presence of unrelated external domains suggests some potential risk or lack of content control. Strategically, the business should focus on enhancing its digital presence with updated technology, improved privacy compliance, and clearer security policies to build customer trust and meet regulatory requirements.

Security posture

The current security posture is basic. HTTPS is implemented, but no advanced security headers are present. The use of outdated JavaScript libraries such as jQuery 1.7.2 introduces potential vulnerabilities. No visible anti-CSRF tokens or security policies are implemented. The absence of privacy and cookie policies indicates compliance gaps with GDPR. No incident response contacts or vulnerability disclosure mechanisms are provided. The site does not appear to use analytics or tracking, reducing some privacy risks but also limiting user behavior insights. The business should prioritize updating all libraries, implementing security headers, adding privacy and cookie policies, and establishing incident response contacts to improve security maturity and regulatory compliance.

Recommendations

  1. Update all JavaScript libraries, especially jQuery, to the latest secure versions to mitigate known vulnerabilities.
  2. Implement essential security headers such as Content-Security-Policy, Strict-Transport-Security, and X-Frame-Options to enhance protection against common web attacks.
  3. Develop and publish comprehensive privacy and cookie policies to comply with GDPR and inform users about data handling practices.
  4. Add anti-CSRF tokens and validate all form inputs to prevent cross-site request forgery and injection attacks.
  5. Establish clear incident response procedures and provide dedicated security contact channels to improve trust and readiness.

Contact details published on the site

Addresses
Legal name
JAN VLČEK
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
JAN VLČEK
Description
Jan Vlček is an authorized builder and member of the Chamber of Authorized Engineers and Technicians in Construction, offering construction management and project services primarily in civil, residential, and industrial building sectors with over 30 years of experience.
Key services
Construction management, Project documentation and planning, Quality control and compliance, Coordination with building authorities, Supervision of construction works
Content quality
basic
Branding
moderate

Technology

Stack
jQuery 1.7.2, Google Maps API, Revolution Slider plugin, Contact Form 7 plugin, WordPress
Platforms
WordPress
Performance
moderate
Mobile
basic
Accessibility
basic
SEO
basic

Security

Observed score
55/100
Good practices seen
  • HTTPS enabled
  • No exposed sensitive data in HTML

Analytics and tracking

Tracking level
minimal
Privacy practices
poor

Advertising

Transparency
poor

Site quality

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

Key observations

  1. Website is a small local business site for an authorized builder in Czech Republic.
  2. Content is mostly in Czech language with professional construction service descriptions.
  3. No privacy or cookie policies found, indicating compliance gaps.
  4. Uses outdated JavaScript libraries which may pose security risks.
  5. No visible security headers or advanced security measures.
  6. No analytics or tracking scripts detected, indicating minimal user tracking.
  7. No social media links found on the site.
  8. Contact information is clearly provided with email, phone, and physical address.
  9. Site uses WordPress CMS with common plugins like Contact Form 7 and Revolution Slider.
  10. Some external domains linked appear unrelated or suspicious (e.g., angrybirdsgames.pw).
Technical notes

Notes

The website is built on WordPress with common plugins like Contact Form 7 and Revolution Slider, using jQuery 1.7.2 and Google Maps API. The site has moderate performance and basic mobile responsiveness but lacks modern SEO and accessibility features. The HTML structure is valid but could be improved for better semantic markup and accessibility. External dependencies include Google-hosted scripts and several unrelated domains linked in footer credits, which may pose security or reputational risks. The hosting provider is not explicitly identified. Overall, the technical infrastructure is functional but outdated, requiring modernization to improve security, performance, and user experience.
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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