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Security report for deltasluzby.cz

Delta Služby s.r.o. · Other · Czech Republic

Medium risk. 5 critical or high findings in Security headers, GDPR outside view and 1 other check.

Security score

67/100

Risk levelMedium

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

Delta Služby s.r.o. is a professional B2B facility services provider based in Olomouc, Czech Republic, specializing in cleaning, security, facility management, laundry services, and employment solutions for persons with disabilities. The company serves a broad range of corporate clients, including prominent state institutions and medium-sized enterprises, boasting over 30 years of experience and more than 200 satisfied clients. Their market position is strong within the Moravian region, supported by ISO 9001 certification and a reputation for reliability and quality. Technically, the website demonstrates a modern and mature digital infrastructure, utilizing React-based technologies, PWA features, and Google Fonts. It is hosted on a reputable Czech hosting provider with fast performance, excellent mobile optimization, and good accessibility. SEO best practices are well implemented, including comprehensive metadata, Open Graph tags, and structured JSON-LD data. From a security perspective, the site enforces HTTPS, includes important security headers, and employs secure form inputs. However, it lacks a publicly available security policy and incident response contact details, which are recommended for enhanced trust and compliance. Privacy compliance is strong, with clear privacy and cookie policies and a consent mechanism aligned with GDPR requirements. Overall, the website is professional, trustworthy, and well-structured, with no signs of blocking or malicious content. Strategic recommendations include publishing a dedicated security policy, incident response information, and a vulnerability disclosure framework to further strengthen security posture and stakeholder confidence.

Scanned

NIS2 and GDPR posture

GDPR outside view
73/ 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

5 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 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 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

  3. 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
    • High

      Weak SSL Key Length

      SSL certificate uses 256-bit key, which is considered weak

      What to do: Use at least 2048-bit RSA or 256-bit ECC key

      • CWE-326
      • OWASP A04:2025
      • Mozilla TLS: Mozilla Server Side TLS 6.0 intermediate: rsa_key_size 2048

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

Keep watching deltasluzby.cz

This scan found 23 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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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
52
Security headers
30
Email security
70
DNS health
75
Network security
100
GDPR outside view
73
Average
67

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

Delta Služby operates in the facility services sector, targeting corporate and governmental clients primarily in the Moravian region of the Czech Republic. Their competitive advantages include a long-standing market presence, ISO 9001 certification, and a diversified service portfolio covering cleaning, security, facility management, laundry, and personnel services. The business model is B2B focused, providing tailored solutions to meet client-specific needs. Revenue streams likely derive from service contracts with large institutions and corporations. The company maintains a strong partnership ecosystem evidenced by references from major state institutions. Growth indicators include a large qualified workforce and a broad client base exceeding 200 organizations. The company emphasizes quality, reliability, and ecological practices, positioning itself as a trusted partner in the facility management industry.

Security posture

The website demonstrates a mature security posture with HTTPS enforced and key security headers implemented, reducing risks such as clickjacking and MIME sniffing. Forms are designed with appropriate input types and validation, minimizing injection risks. No exposed sensitive data or vulnerable libraries were detected in the HTML content. However, the absence of a published security policy and incident response contacts represents a compliance gap and potential risk in incident handling. There is no evidence of a vulnerability disclosure program or security.txt file, which could enhance transparency and security culture. Overall, the security maturity is good but could be improved by formalizing policies and communication channels related to security incidents and disclosures.

Recommendations

  1. Publish a dedicated security policy page outlining security practices and commitments.
  2. Provide clear incident response contact information, such as a security@ or abuse@ email address.
  3. Implement and publish a vulnerability disclosure policy or security.txt file to encourage responsible reporting.
  4. Regularly review and update privacy and cookie policies to maintain GDPR compliance.
  5. Enhance user trust by showcasing additional certifications or security audits if available.

Contact details published on the site

Addresses
Legal name
Delta Služby s.r.o.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Delta Služby s.r.o.
Description
Poskytovatel profesionálních facility služeb s 30 letou tradicí. Specializuje se na úklid, ostrahu, facility management a náhradní plnění na Moravě.
Key services
Úklid, Ostraha, Facility management, Prádelenské služby, Náhradní plnění, Personální služby
Content quality
excellent
Branding
consistent

Technology

Stack
JavaScript (ES Modules), Google Fonts, PWA (manifest.json), SVG images
Performance
fast
Mobile
excellent
Accessibility
good
SEO
excellent

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced (implied by canonical URL and secure links)
  • Security headers present
  • No exposed sensitive data in HTML
  • Secure forms with proper input types and validation

Analytics and tracking

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

Advertising

Transparency
basic

Site quality

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

Key observations

  1. Website is fully accessible with no blocking or WAF challenges.
  2. Comprehensive metadata and structured data present for SEO and rich results.
  3. Multiple trust signals including ISO certification and client references.
  4. Clear contact information and multiple communication channels.
  5. Modern, responsive design with good performance and accessibility.
  6. Security headers and HTTPS enforced, but no explicit security policy or incident response page found.
  7. Cookie consent mechanism implemented with clear user options.
  8. No suspicious or malicious content detected.
Technical notes

Notes

The website is built using modern web technologies including React (inferred from module scripts), PWA capabilities, and Google Fonts integration. Hosting is provided by a reputable Czech provider (websupport.cz), ensuring reliable uptime and performance. The site is mobile-optimized with responsive design and accessibility considerations. SEO is well addressed through comprehensive metadata, Open Graph tags, and structured data for rich search results. No CMS was detected, suggesting a custom or framework-based solution. Performance is fast with preconnect and DNS prefetch optimizations. Technical risks are minimal, with no outdated or vulnerable libraries identified. Opportunities exist to further modernize by integrating advanced security frameworks and enhancing incident response readiness.
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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