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Security report for itesco.cz

Tesco Stores ČR a.s. · Retail · Czech Republic

Partial score · DNS & email only

68/100

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

Tesco Stores ČR a.s. operates a comprehensive retail supermarket website for the Czech Republic market, offering online grocery shopping, loyalty programs (Clubcard), promotional offers, recipes, and store locator services. The website demonstrates a mature digital presence with modern technologies such as React and Next.js, integrated analytics, and user-friendly features including cookie consent and privacy policies. The site is well-branded, professionally designed, and optimized for mobile and accessibility standards. Security posture is strong with HTTPS and security headers, though explicit security policies and incident response information are not publicly disclosed. The absence of WHOIS data from the CZ NIC WHOIS server limits domain registration transparency, but the website content and corporate links support legitimacy. Overall, the site is a reliable and professional retail platform serving a large customer base in the Czech Republic.

Scanned

NIS2 and GDPR posture

GDPR outside view
73/ 100 · Medium
Checks completed
6of 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

2 findings rated critical or high. Fix these first.

  1. 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

  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

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

Keep watching itesco.cz

This scan found 10 issues across 5 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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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
Email security
80
DNS health
85
Network security
100
GDPR outside view
73
Average
68

Not counted

  • Security headers: did not complete in this scan.
  • 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

Tesco Czech Republic holds a strong market position as a large retail supermarket chain with both physical and online presence. Their business model focuses on retail sales supported by loyalty programs and digital engagement. The website targets general consumers in the Czech Republic, offering convenience through online shopping and promotional incentives. The company maintains partnerships and corporate sites linked from the main domain, indicating a structured corporate ecosystem. Growth indicators include expansion of online delivery zones and mobile app promotion. The business leverages digital marketing and analytics to optimize customer engagement and sales.

Security posture

The website employs HTTPS with strong SSL configuration and security headers, indicating good baseline security practices. Cookie consent and privacy policies demonstrate GDPR compliance efforts. However, the lack of published security policies, incident response contacts, and vulnerability disclosure mechanisms suggests room for improvement in transparency and readiness. No vulnerabilities or exposed sensitive data were detected in the HTML content. The security score is good but could be enhanced by publishing explicit security governance documents and providing direct security contact channels.

Recommendations

  1. Publish a dedicated security policy and incident response page to improve transparency and customer trust.
  2. Implement and publicize a vulnerability disclosure program or security.txt file to encourage responsible reporting.
  3. Provide clear security contact information such as security@ or abuse@ email addresses.
  4. Enhance data retention and privacy transparency by detailing retention periods and user rights.
  5. Regularly audit third-party scripts and analytics tools to minimize privacy risks and improve compliance.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Tesco Stores ČR a.s.
Description
Tesco Czech Republic website offering online shopping, recipes, flyers, Clubcard discounts, and store information.
Key services
Online grocery shopping, Clubcard loyalty program, Promotional offers and flyers, Store locator, Recipe ideas
Content quality
excellent
Branding
consistent

Technology

Stack
React, Next.js, Google Tag Manager, Google Analytics, New Relic
Frameworks
Next.js
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

Analytics and tracking

Services
Google Analytics, New Relic
Tracking level
moderate
Privacy practices
good

Advertising

Tracking pixels
New Relic
Transparency
good

Site quality

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

Key observations

  1. Website is fully accessible with rich content and interactive features.
  2. No WHOIS data available from CZ NIC WHOIS server, possibly due to domain registration status or privacy.
  3. Strong branding and consistent corporate identity.
  4. Comprehensive privacy and cookie policies with consent mechanisms.
  5. No direct company contact emails or phone numbers found in HTML content.
  6. No explicit security policy or incident response information published.
  7. Use of modern web technologies and analytics tools.
  8. No suspicious or malicious content detected.
Technical notes

Notes

The website is built on a modern React/Next.js framework, ensuring good performance and SEO optimization. Integration with Google Tag Manager, Google Analytics, and New Relic provides robust analytics and monitoring capabilities. The site is mobile optimized and accessible, with clear navigation and structured content. No CMS was explicitly detected, suggesting a custom or proprietary solution. Hosting provider details are not disclosed. Performance is moderate, with potential for further optimization. The technical stack supports scalability and user engagement but should maintain vigilance on third-party dependencies for security.
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. 68/100Medium19 findings · partial scanView report
  2. 58/100Medium13 findings · partial scanView report
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