Skip to main content

Security report for grandoptical.cz

GrandVision CZ s.r.o. · 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 is a Czech Republic-based retail and e-commerce company specializing in optical products such as prescription glasses, sunglasses, and contact lenses. The company operates both physical stores across the country and an online webshop, offering professional eye measurement services and customer support. The website is well-structured, professionally designed, and targets consumers seeking quality eyewear and eye care services in the Czech market. The business is a medium-sized entity, part of the larger GrandVision group, with a strong brand presence and customer trust indicators.

Scanned

This is an earlier scan of grandoptical.cz. View the latest report

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

The company holds a solid market position as a national optical retailer with a comprehensive product portfolio and services. Its business model combines brick-and-mortar stores with an online sales channel, catering to a broad consumer base. The presence of multiple well-known brands and exclusive collections enhances its competitive advantage. The company maintains active social media channels and offers customer engagement through newsletters and promotions. The career subdomain indicates organizational growth and investment in human resources. Overall, the business demonstrates maturity and a customer-centric approach.

Security posture

The website enforces HTTPS and integrates security features such as CSRF tokens and Google reCAPTCHA to protect user interactions. However, explicit HTTP security headers are not detected, and no published security policy or incident response information is found, indicating room for improvement in transparency and defense-in-depth. The absence of known vulnerabilities or exposed sensitive data is positive, but ongoing monitoring and enhancement of security controls are recommended to maintain a robust security posture and compliance with regulations like GDPR.

Recommendations

  1. Implement comprehensive HTTP security headers including Content Security Policy, HSTS, and X-Frame-Options.
  2. Publish a clear security policy and incident response contact information on the website.
  3. Conduct regular security audits and vulnerability assessments of web applications and third-party libraries.
  4. Enhance accessibility features to improve compliance and user experience for all visitors.
  5. Consider adding a security.txt file to facilitate responsible vulnerability disclosure.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
GrandVision CZ s.r.o.
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 dioptric glasses, Sale of sunglasses, Contact lenses, Eye measurement services, Customer support and after-sales service
Content quality
good
Branding
consistent

Technology

Stack
Google Tag Manager, Algolia Search, Glide.js carousel, reCAPTCHA v3
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • CSRF token present in meta tags
  • reCAPTCHA integration

Analytics and tracking

Services
Google Analytics
Tracking level
moderate
Privacy practices
good

Advertising

Tracking pixels
Google Analytics (via GTM)
Marketing tools
Algolia Search
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 rich content and e-commerce functionality.
  2. No WHOIS data available, possibly due to registry policy or privacy protection.
  3. Strong presence of privacy and cookie consent mechanisms.
  4. Multiple contact channels clearly provided.
  5. No explicit security policy or incident response info found.
  6. Good use of modern web technologies and analytics.
  7. No suspicious or malicious content detected.
  8. Social media presence on Facebook, YouTube, Instagram.
  9. Business appears to be a medium-sized retail and e-commerce company in Czech Republic.
Technical notes

Notes

The website uses modern web technologies such as Google Tag Manager, Algolia for search, and Glide.js for carousels, indicating a contemporary tech stack. It is mobile-optimized with responsive design and includes SEO best practices like meta tags and canonical URLs. Performance is moderate, with potential for optimization. The CMS or hosting provider is not explicitly identified. The site includes multiple interactive forms for search, contact, newsletter subscription, and shopping cart management, all secured with CSRF tokens. Overall, the technical infrastructure supports a professional e-commerce experience but could benefit from enhanced performance tuning and accessibility improvements.
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.