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Security report for jk.cz

JK šperky · Retail · Czech Republic

Medium risk. 7 critical or high findings in GDPR outside view, Security headers and 1 other check.

Security score

62/100

Risk levelMedium

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

JK šperky is a Czech-based jewelry retailer specializing in handcrafted gold jewelry and watches, emphasizing quality, craftsmanship, and original designs since 1991. The company targets Czech-speaking consumers seeking premium jewelry products with lifetime warranty and certified authenticity. The website is built on the Shoptet e-commerce platform, integrating standard marketing and analytics tools such as Google Analytics and Facebook SDK. Security posture is generally good with HTTPS and secure login forms, though some outdated libraries and missing security headers present minor risks. Privacy compliance is well addressed with clear cookie consent and privacy policies. The absence of WHOIS data slightly impacts domain trust but does not detract from the professional presentation and business legitimacy. Overall, JK šperky maintains a solid digital presence suitable for its market segment.

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

7 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

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

  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 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 jk.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

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Prices incl. 21% VAT. Secure checkout by Mollie; sold by SEQ SIA, Latvia.

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
40
Email security
60
DNS health
80
Network security
100
GDPR outside view
40
Average
62

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

JK šperky holds a strong position in the Czech retail jewelry market, leveraging handcrafted quality and a long-standing brand history. Their business model combines e-commerce with physical retail, offering a broad product range including rings, bracelets, earrings, necklaces, watches, and accessories. The company benefits from trust signals such as lifetime warranties and certificates of authenticity. Marketing efforts utilize Google Ads and social media platforms to engage customers. The website's content and navigation are well structured, supporting customer engagement and sales. No direct partnerships or subsidiaries were identified from the domain data.

Security posture

The website demonstrates a moderate to good security maturity level with enforced HTTPS, CSRF protection on login forms, and cookie consent mechanisms. However, the use of an outdated jQuery version (1.11.3) could expose the site to known vulnerabilities. Security headers like Content-Security-Policy and X-Frame-Options are not explicitly detected, which could be improved to mitigate clickjacking and content injection risks. No public incident response or security policy pages were found, indicating potential gaps in transparency and readiness. No vulnerabilities or exposed sensitive data were observed in the HTML content. Overall, the security posture is adequate but could benefit from modernization and enhanced security controls.

Recommendations

  1. Update JavaScript libraries, especially jQuery, to the latest secure versions to mitigate known vulnerabilities.
  2. Implement and verify comprehensive security headers including Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options.
  3. Publish a dedicated security policy and incident response information to improve transparency and customer trust.
  4. Enhance accessibility features to meet modern standards and improve user experience for all users.
  5. Regularly audit and monitor website security posture and compliance with GDPR and other relevant regulations.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
JK šperky
Description
JK šperky is a Czech jewelry retailer specializing in handcrafted gold jewelry with genuine stones, offering original designs since 1991. They emphasize craftsmanship, quality, and lifetime warranty with free servicing every two years.
Key services
Jewelry sales (rings, bracelets, earrings, necklaces, pendants), Watch sales, Custom design and craftsmanship, Lifetime warranty and servicing, Gift vouchers
Content quality
good
Branding
consistent

Technology

Stack
JavaScript, jQuery 1.11.3, Google Tag Manager, Facebook SDK, Google Analytics (GA4), Google Ads Conversion Tracking, Shoptet platform
Frameworks
Shoptet CMS
Platforms
Shoptet e-commerce platform
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
80/100
Good practices seen
  • HTTPS enforced
  • Secure login forms with CSRF tokens
  • Cookie consent mechanism implemented

Analytics and tracking

Services
Google Analytics (GA4)
Tracking level
moderate
Privacy practices
good

Advertising

Ad networks
Google Ads
Tracking pixels
Facebook Pixel
Marketing tools
Facebook SDK
Transparency
good

Site quality

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

Key observations

  1. Website is a professional e-commerce platform for jewelry and watches.
  2. Content is in Czech language targeting local customers.
  3. No WHOIS data available, which is unusual but not necessarily malicious.
  4. Cookie consent and privacy policy are implemented and GDPR compliant.
  5. Use of outdated jQuery library may pose security risks.
  6. No explicit security or incident response policies published.
  7. No suspicious or malicious content detected.
Technical notes

Notes

The website is built on the Shoptet e-commerce platform, utilizing JavaScript, jQuery 1.11.3, Google Tag Manager, Facebook SDK, and Google Analytics (GA4). The site loads multiple external scripts and stylesheets from trusted CDNs. Performance is moderate with some images lazy-loaded and others eagerly loaded for above-the-fold content. Mobile optimization is good with responsive design and accessible navigation. SEO is supported by proper meta tags, Open Graph tags, and structured data. However, the use of an outdated jQuery version and lack of some security headers indicate technical debt and potential security risks. Hosting provider details are not explicitly found. Overall, the technical infrastructure is solid but could benefit from modernization and security hardening.
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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