Skip to main content

Security report for grandoptical.cz

Retail · Czech Republic

Low risk. 4 critical or high findings in GDPR outside view and SSL/TLS.

Security score

78/100

Risk levelLow

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

GrandOptical.cz is a Czech Republic-based retail business specializing in optical products including prescription glasses, sunglasses, and contact lenses. The website offers a broad product catalog from global and exclusive brands, supported by professional optometrist services and physical store locations across the country. The business model combines e-commerce with brick-and-mortar retail, targeting general consumers seeking quality eyewear and eye care services. The site is well-branded and professionally designed, providing a good user experience with clear navigation and mobile optimization. Technically, the website employs modern technologies such as Google Tag Manager for analytics and Algolia for search functionality, indicating a mature digital infrastructure. The site uses HTTPS with security features like CSRF tokens and reCAPTCHA, enhancing security posture. However, the absence of visible security headers and formal privacy or cookie policies suggests room for improvement in compliance and security best practices. Security-wise, the site shows a moderate security posture with encrypted connections and anti-CSRF measures but lacks explicit privacy and cookie policies, security.txt, or vulnerability disclosure information. No WHOIS data is publicly available, likely due to privacy protection, which slightly reduces transparency but is common for retail businesses. No suspicious or malicious indicators were found in the website content or external links. Overall, GrandOptical.cz presents a legitimate, professional retail website with good content and technical implementation but would benefit from enhanced privacy compliance and security transparency to improve trust and regulatory adherence.

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

4 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, YouTube

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

  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.

    • 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

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

Keep watching grandoptical.cz

This scan found 16 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.

Billed monthly to your card. Cancel anytime. The full timeline opens with your unlock code.

Full report

€39.90one-time

  • The complete analysis as a PDF you can cite
  • Email delivery with an unlock code
  • Lifetime access to this report

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
77
Security headers
85
Email security
80
DNS health
85
Network security
100
GDPR outside view
40
Average
78

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

GrandOptical operates in the retail sector focused on eyewear and eye care products in the Czech Republic. The company leverages both online and physical store channels to reach customers. Its competitive advantage lies in offering a wide range of branded optical products combined with professional eye measurement services. The business targets a broad demographic including men, women, and children. The presence of exclusive brands and virtual try-on features indicates investment in customer experience and innovation. The use of Google Tag Manager and Algolia suggests active marketing and search optimization efforts. The lack of visible company registration or VAT information on the site limits deeper business intelligence insights. The company appears to maintain a medium-sized operation with a focus on quality and service.

Security posture

The website enforces HTTPS and includes CSRF protection and reCAPTCHA, which are positive security controls. However, the absence of key security headers such as Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options reduces defense-in-depth. No explicit privacy or cookie policies were found, which is a compliance gap under GDPR. There is no evidence of a published incident response policy or security contact channels. No vulnerability disclosure or security.txt file is present, limiting transparency for security researchers. Overall, the security maturity is moderate but could be improved by implementing recommended headers, publishing privacy and cookie policies, and establishing clear security communication channels.

Recommendations

  1. Publish comprehensive privacy and cookie policies with clear GDPR compliance statements.
  2. Implement and configure security headers such as Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options.
  3. Provide clear contact information including security incident response contacts and general customer support.
  4. Add a vulnerability disclosure policy or security.txt file to facilitate responsible reporting.
  5. Enhance accessibility features to improve compliance and user experience for all users.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Description
Vyberte si z naší široké nabídky brýlí a kontaktních čoček od světových značek. Nabízíme vysokou kvalitu výrobků a profesionální služby v našich prodejnách po celé České republice.
Key services
Sale of optical frames, Sale of sunglasses, Sale of contact lenses, Eye measurement services, Professional optometrist care
Content quality
good
Branding
consistent

Technology

Stack
Google Tag Manager, Algolia Search
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
80/100
Good practices seen
  • HTTPS enforced
  • CSRF token present in meta tag
  • reCAPTCHA site key present

Analytics and tracking

Services
Google Tag Manager
Tracking level
moderate
Privacy practices
basic

Advertising

Marketing tools
Algolia Search
Transparency
basic

Site quality

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

Key observations

  1. Website is fully accessible with rich content and product listings.
  2. No WHOIS data available, indicating privacy protection or registry restrictions.
  3. No explicit privacy, cookie, or terms of service pages found in the analyzed content.
  4. Use of Google Tag Manager and Algolia indicates modern marketing and search technologies.
  5. No direct contact emails or phone numbers found in the provided content.
  6. No security.txt or vulnerability disclosure information found.
  7. Website uses HTTPS and includes CSRF tokens and reCAPTCHA for security.
  8. Content is in Czech language targeting Czech Republic customers.
  9. No adult or questionable content detected.
Technical notes

Notes

The website uses a modern tech stack including Google Tag Manager for analytics and Algolia for search, indicating a focus on performance and user experience. The HTML structure is valid with proper meta tags for SEO and social verification (Facebook domain verification, Google site verification). The site is mobile optimized and responsive. However, no CMS or hosting provider information was detected. Performance appears moderate based on the presence of multiple large images and carousels. There is an opportunity to improve technical SEO and accessibility compliance. The lack of security headers is a technical risk that should be addressed to prevent common web attacks.
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. 78/100Low24 findingsView report
Reviews of this site

Share your experience with grandoptical.cz. Every review is verified by email and published after moderation.

Overall rating
Select a rating
4000 characters remaining

We’ll email you to confirm your review and keep your details private.

Community rating

No published reviews yet. Be the first to review grandoptical.cz.

Feedback on this report

Rate this report, add an optional comment, and tell us if you want a security specialist to follow up.

Overall report quality
Select a rating
2000 characters remaining

We only use your feedback to improve Guard reports. Contact details are never shared.