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Security report for billa.cz

BILLA · Retail · Czech Republic

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

Security score

76/100

Risk levelLow

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

BILLA is a leading supermarket chain operating in the Czech Republic, offering a wide range of groceries and consumer products. The website serves as a digital platform for customers to access flyers, promotions, recipes, and loyalty program benefits. The company is part of the REWE Group, a major European retail conglomerate. The site targets general consumers seeking quality supermarket services and convenient shopping experiences. Technically, the website is built on modern JavaScript frameworks such as Vue.js and Nuxt.js, ensuring a responsive and user-friendly interface optimized for mobile devices. The presence of structured data and Open Graph tags enhances SEO and social media integration. Security-wise, the website enforces HTTPS and includes standard security headers, reflecting a good security posture. However, the absence of publicly available WHOIS data and lack of explicit security policies or incident response contacts slightly reduce the overall trust score. Privacy compliance is well addressed with clear privacy and cookie policies and consent mechanisms. Overall, the site demonstrates a mature digital presence suitable for a large retail enterprise.

Scanned

This is an earlier scan of billa.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, LinkedIn, YouTube, Google APIs

      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 billa.cz

This scan found 18 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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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
72
Security headers
90
Email security
75
DNS health
80
Network security
100
GDPR outside view
40
Average
76

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

Breach exposure

Leaked credentials and lookalike domains from OffSeq Breach. The counts are free; the detailed lists are paid add-ons.

Dark web exposure

Add-on

Leaked records that mention billa.cz, from OffSeq Breach.

Total records
5,553
Employees
0
Customers
5,544
Third parties
9
Weak passwords
12%

7 subdomains affected

See the 10 newest leaked credentials

A one-off add-on to this report that lists the most recent identifier and password pairs OffSeq Breach holds for billa.cz.

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Breach keeps ingesting new leaks, so these numbers can grow between scans.

Technical appendix

Business context, site observations and technical notes gathered during the scan, and the standards behind each reference.

Business context

Business profile

BILLA holds a strong market position in the Czech retail sector, leveraging its parent company REWE Group's resources. The business model focuses on brick-and-mortar supermarkets complemented by digital engagement through the website and mobile app. Revenue streams include direct retail sales and loyalty program incentives. The target customer segment is broad, encompassing everyday consumers in the Czech Republic. The company maintains a consistent brand image and offers comprehensive customer support channels. Partnerships with payment providers and logistics are implied but not explicitly detailed on the site. Growth indicators include active promotion of loyalty programs and digital content such as recipes. The website's integration with Google Tag Manager and analytics tools supports data-driven marketing strategies.

Security posture

The website exhibits a solid security foundation with HTTPS enforcement and multiple security headers such as HSTS, X-Frame-Options, and Content-Security-Policy. No exposed sensitive data or vulnerable libraries were detected in the HTML content. Forms appear to be secured, though explicit CSRF tokens were not visible in the source. The lack of a published security policy or incident response contact limits transparency in security governance. No vulnerability disclosure program or security.txt file was found, which could be improved to encourage responsible reporting. Overall, the security posture is good but could benefit from enhanced communication and formalized security processes.

Recommendations

  1. Publish a dedicated security policy and incident response page to improve transparency.
  2. Implement and publicize a vulnerability disclosure program with a security.txt file.
  3. Regularly audit third-party scripts and dependencies for vulnerabilities.
  4. Enhance form security by explicitly including CSRF tokens and input validation.
  5. Maintain and communicate clear data retention and privacy policies aligned with GDPR.

Contact details published on the site

Addresses
Legal name
BILLA, spol. s r.o.
VAT number
CZ25143801
Registration number
25143801
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
BILLA
Description
Objevte nejnovější leták, denní akce a kvalitní produkty v prodejnách BILLA. Sbírejte body, získejte odměny. Využijte exkluzivní slevy a výhody přímo v aplikaci.
Key services
Supermarket retail, Loyalty program (BILLA klub), Online flyer and promotions, Recipes and cooking inspiration
Content quality
excellent
Branding
consistent

Technology

Stack
Vue.js, Nuxt.js, Google Tag Manager, Google Analytics, Material Icons, JavaScript ES Modules
Frameworks
Vue.js, Nuxt.js
Performance
moderate
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Security headers present
  • No exposed sensitive data in HTML
  • Secure forms with CSRF tokens (implied)

Analytics and tracking

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

Advertising

Transparency
basic

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 no blocking detected.
  2. WHOIS data is unavailable or restricted, limiting domain trust analysis.
  3. Strong branding and professional design consistent with a major retail chain.
  4. Good privacy and cookie policy presence with consent mechanism.
  5. Use of modern web technologies and frameworks (Vue.js, Nuxt.js).
  6. Security headers and HTTPS are properly implemented.
  7. No explicit security policy or incident response contact found.
  8. No vulnerability disclosure or security.txt found.
  9. Moderate use of tracking and analytics with Google Tag Manager.
  10. No suspicious or malicious external domains detected.
Technical notes

Notes

The website uses a modern technology stack centered on Vue.js and Nuxt.js frameworks, enabling server-side rendering and improved SEO. The use of Google Tag Manager and Google Analytics indicates a mature approach to user behavior tracking and marketing analytics. Performance is moderate, with room for optimization in asset loading and caching strategies. The site is well optimized for mobile devices and accessibility, with semantic HTML and ARIA roles implied. No CMS was explicitly detected, suggesting a custom or proprietary content management solution. Hosting details are not publicly available. The technical infrastructure supports a professional and scalable retail website but should continue evolving to maintain performance and security standards.
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. 71/100Medium28 findingsView report
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