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Security report for sylviene.cz

Sylviene · Retail · Czech Republic

Medium risk. 7 critical or high findings in GDPR outside view, SSL/TLS and 1 other check.

Security score

53/100

Risk levelMedium

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

Sylviene is a Czech Republic based e-commerce retailer specializing in jewelry for women, men, and children. The website offers a broad range of jewelry products including rings, necklaces, bracelets, earrings, and personalized items. It positions itself as a trusted online jewelry store with customer-friendly policies such as daily shipping before noon and a 90-day return period. The site is built on the Shoptet platform, integrating modern web technologies and marketing tools such as Google Analytics, Facebook SDK, and Google Tag Manager. The presence of cookie consent and privacy policies indicates compliance with GDPR regulations. Security posture is solid with HTTPS enforced and secure login forms, though explicit security policies and incident response information are not publicly disclosed. The absence of WHOIS registration data is a notable gap, slightly impacting trustworthiness, but the overall professional presentation and business information support legitimacy. Strategic recommendations include enhancing security headers, publishing a security.txt file, and improving transparency around security policies.

Scanned

NIS2 and GDPR posture

GDPR outside view
25/ 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

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

  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 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 sylviene.cz

This scan found 19 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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Full report

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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
0
Security headers
40
Email security
75
DNS health
80
Network security
100
GDPR outside view
25
Average
53

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

Sylviene operates in the retail sector focusing on jewelry and accessories, targeting primarily Czech consumers. The business model is direct-to-consumer e-commerce with a comprehensive product catalog segmented by gender and occasion. The company leverages partnerships with hallmarking authorities to guarantee product quality, enhancing customer trust. Marketing efforts include retargeting and analytics via Google and Facebook platforms. The website's clear navigation, professional design, and customer service contact details support a positive user experience. The lack of WHOIS data suggests either privacy protection or registry issues, which should be addressed to improve business credibility. No evidence of subsidiaries or partner domains was found, indicating a focused standalone operation.

Security posture

The website demonstrates a mature security posture with HTTPS encryption, secure login forms protected by CSRF tokens, and cookie consent mechanisms aligned with GDPR. However, the absence of explicit security policies, incident response contacts, and vulnerability disclosure channels limits transparency. No known vulnerabilities or exposed sensitive data were detected in the HTML content. The use of third-party scripts and marketing tools is standard but requires ongoing monitoring to mitigate supply chain risks. Security headers such as Content-Security-Policy and HSTS are not explicitly confirmed and should be implemented or verified. Overall, the site is secure for typical e-commerce operations but could benefit from enhanced security documentation and proactive vulnerability disclosure.

Recommendations

  1. Implement and verify security headers including Content-Security-Policy, X-Frame-Options, and Strict-Transport-Security.
  2. Publish a security policy and incident response contact information on the website.
  3. Create and host a security.txt file to facilitate vulnerability reporting.
  4. Regularly update and audit third-party libraries and scripts to prevent vulnerabilities.
  5. Improve WHOIS registration transparency to enhance domain trustworthiness.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Sylviene
Description
Malé třpytivé radosti na každý den. Odesíláme každý den do 12 hod. Výměna i vrácení je možné až do 90 dní.
Key services
Jewelry sales, Gift packaging, Customer support, Shipping and returns
Content quality
good
Branding
consistent

Technology

Stack
jQuery 1.11.3, Google Analytics, Google Tag Manager, Facebook SDK, Shoptet platform, SmartSupp chat, Glami.cz integration, Google Pay, CSS3, HTML5
Frameworks
Shoptet e-commerce platform
Platforms
Web
Performance
moderate
Mobile
good
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Cookie consent mechanism
  • No exposed sensitive data in HTML
  • Secure login form with CSRF token

Analytics and tracking

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

Advertising

Ad networks
Google Ads
Tracking pixels
Facebook Pixel
Marketing tools
lhinsights.com, SmartSupp chat
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 selling jewelry.
  2. Content is in Czech language targeting Czech customers.
  3. No WHOIS data available, which is unusual and may indicate privacy protection or registry issues.
  4. Uses Shoptet e-commerce platform with multiple integrations.
  5. Has cookie consent and privacy policy compliant with GDPR.
  6. No security policy or incident response info publicly available.
  7. No suspicious or malicious content detected.
  8. Phone contact is clearly provided with business hours.
  9. Website uses HTTPS and modern tracking and marketing tools.
Technical notes

Notes

The website is built on the Shoptet e-commerce platform, utilizing jQuery 1.11.3 and integrating multiple third-party services such as Google Analytics, Facebook SDK, and SmartSupp chat. The site uses modern HTML5 and CSS3 standards with responsive design for mobile optimization. Performance is moderate, with asynchronous loading of scripts and preloading of critical resources. SEO is supported by proper meta tags, Open Graph tags, and canonical URLs. Accessibility features are present, including skip links and ARIA roles. The technical stack is typical for a mid-sized e-commerce site, with opportunities for modernization by updating legacy libraries and enhancing security headers.
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

Earlier scans of this domain

  1. 60/100Medium34 findingsView report
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