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Security report for silba.cz

SILBA-Elstav s.r.o. · Real Estate · Czech Republic

Medium risk. 8 critical or high findings in GDPR outside view, SSL/TLS and 2 other checks.

Security score

51/100

Risk levelMedium

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

SILBA-Elstav s.r.o. is a well-established Czech construction company with over 25 years of experience, specializing in residential, commercial, industrial, and historical building projects primarily in the Plzeňský kraj and surrounding regions. The company offers comprehensive construction and reconstruction services, supported by ISO 9001, ISO 14001, and ISO 45001 certifications, reflecting a strong commitment to quality, environmental management, and occupational health and safety. Their website demonstrates a professional digital presence built on WordPress with modern frameworks and includes clear contact channels and compliance with GDPR and cookie regulations. Security posture is solid with HTTPS and cookie consent mechanisms, though some security headers and incident response details could be improved. Overall, the company presents a trustworthy and credible profile with a moderate to high technical maturity level.

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

8 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

  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.

    • Critical

      Unable to retrieve SSL certificate

      Could not establish secure connection to retrieve certificate information

      What to do: Check if the server is accessible and SSL/TLS is properly configured

  3. 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 silba.cz

This scan found 17 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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Recommended

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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
0
Security headers
15
Email security
65
DNS health
85
Network security
100
GDPR outside view
40
Average
51

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

Breach exposure

Leaked credentials and lookalike domains from OffSeq Breach. The counts are free; the detailed lists are paid add-ons.

Dark web exposure

Add-on

Leaked records that mention silba.cz, from OffSeq Breach.

Total records
8
Employees
0
Customers
0
Third parties
8
Weak passwords
13%

See the 10 newest leaked credentials

A one-off add-on to this report that lists the most recent identifier and password pairs OffSeq Breach holds for silba.cz.

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Breach keeps ingesting new leaks, so these numbers can grow between scans.

Technical appendix

Business context, site observations and technical notes gathered during the scan, and the standards behind each reference.

Business context

Business profile

The company operates as a main contractor in the construction sector, targeting clients requiring new builds, renovations, and specialized construction services in residential and commercial real estate. Their market position is supported by long domain age and consistent registration data. The business model focuses on delivering turnkey construction projects with additional services such as electrical and plumbing works. The website content and certifications indicate a stable medium-sized enterprise with regional influence. The presence of detailed contact information and social media links supports customer engagement and trust. No direct partnerships or subsidiaries were identified from the website data.

Security posture

The website employs HTTPS with a valid SSL certificate and uses a GDPR-compliant cookie consent plugin, indicating awareness of privacy and security best practices. However, no explicit security headers were detected in the HTML content, and there is no public incident response or vulnerability disclosure policy. The contact form collects personal data but appears to be secured via standard WordPress mechanisms. The absence of exposed sensitive data and use of updated WordPress and theme versions reduce risk. Recommendations include adding security headers, publishing incident response contacts, and implementing a security.txt file to enhance transparency and readiness.

Recommendations

  1. Implement HTTP security headers such as Content-Security-Policy, X-Frame-Options, and Strict-Transport-Security to strengthen defense against common web attacks.
  2. Publish clear incident response and vulnerability disclosure information, including dedicated security contact emails.
  3. Regularly audit and update all WordPress plugins and themes to mitigate vulnerabilities.
  4. Enhance website accessibility features to comply with WCAG standards and improve user experience for all visitors.
  5. Maintain transparency by adding a security.txt file and updating privacy and cookie policies as regulations evolve.

Contact details published on the site

Addresses
Legal name
SILBA-ELSTAV s.r.o.
VAT number
CZ64358844
Registration number
64358844
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
SILBA-Elstav s.r.o.
Description
Stavební společnost Plzeň, stavby a rekonstrukce. Poskytuje široké spektrum služeb v oblasti stavebnictví, včetně občanské a bytové výstavby, staveb inženýrského charakteru, developerských projektů, rekonstrukcí komerčních, průmyslových, bytových, rodinných a historických objektů.
Key services
Komerční stavby, Občanské stavby, Rekonstrukce, Novostavby, Interiéry, Historické objekty
Content quality
good
Branding
consistent

Technology

Stack
WordPress, PHP, jQuery, Google Fonts
Frameworks
Enfold Theme, Avia Framework
Platforms
WordPress CMS
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Cookie consent mechanism
  • No exposed sensitive data in HTML
  • Use of security and privacy plugins (Complianz GDPR)

Analytics and tracking

Tracking level
minimal
Privacy practices
good

Advertising

Marketing tools
Complianz GDPR Cookie Consent
Transparency
basic

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. Comprehensive cookie and privacy policies with consent mechanism implemented.
  3. Clear and detailed contact information including emails, phone numbers, physical address, and contact form.
  4. Use of modern WordPress CMS with Enfold theme and Avia framework.
  5. ISO certifications prominently displayed indicating strong quality and security management.
  6. No evidence of incident response or vulnerability disclosure policies publicly available.
  7. No advertising or tracking networks detected beyond GDPR cookie management.
  8. Content is professional, relevant, and safe for general audiences.
  9. No suspicious or malicious external domains linked.
Technical notes

Notes

The website is built on WordPress CMS using the Enfold theme and Avia framework, leveraging jQuery and Google Fonts for frontend functionality and styling. Hosting is provided by REG-ACTIVE24, a Czech registrar and hosting provider. The site is mobile optimized with responsive design and includes SEO best practices such as canonical URLs and Open Graph metadata. Performance is moderate, with lazy loading images and asynchronous script loading. There is room for improvement in accessibility and security header implementation. Overall, the technical infrastructure is stable and suitable for a medium-sized regional construction business.
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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